Table 2 in Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited

Table 2. External measurements of S. mitsukurii expressed as percentage of total length (% TL). Values of the paratype of S. mitsukurii (SU 7184, identified as S. acanthias) and specimens of S. acutirostris are also provided. TL is expressed in millimeters. H: holotype; P: paratype; N: number of specimens; x: mean; SD: standard deviation. Squalus mitsukuriiS. acanthiasS. acutirostrisHNxSDSU 7184HPHUMZ 74990Total length (mm)710.012240.0-1120.0643.9344.0277.0635.0975.0536.0Precaudal length77.51276.9-80.478.31.179.481.979.078.0Pre-second dorsal length61.01258.4-63.960.81.660.664.663.959.7Pre-first dorsal length32.41228.3-31.830.71.136.132.331.828.4Pre-vent length50.01246.4-52.749.21.950.552.846.747.6Prepelvic length47.91243.1-50.046.81.847.749.347.245.0Prepectoral length24.61220.0-24.722.41.421.524.323.621.6Head length24.21220.4-24.422.71.222.224.422.622.1Prebranchial length20.41216.6-22.119.91.518.920.917.919.1Prespiracular length12.81211.4-21.513.62.812.413.910.612.8Preorbital length7.3126.9-10.77.91.07.38.27.38.1Prenarial length5.6124.1-6.45.10.65.34.75.14.7Preoral length10.3127.6-11.59.81.010.510.49.510.2Inner nostril-labial furrow space4.3123.9-5.34.50.45.16.98.65.9Mouth width8.6126.6-8.17.70.57.19.48.27.2Labial furrow length2.5122.1-2.72.40.22.32.21.92.3Internarial space4.7123.6-5.14.30.44.03.63.74.7Interorbital space9.3127.7-9.88.90.78.29.69.28.5Eye length3.6123.1-5.23.80.53.13.82.84.7Eye height0.9121.2-2.51.70.42.01.61.72.1Spiracle length1.3120.8-1.91.40.21.21.40.91.5First gill-slit height1.7121.5-2.82.00.41.42.41.31.9Fifth gill-slit height2.3121.8-2.72.40.21.93.31.62.2Interdorsal space21.11221.7-25.923.61.618.028.324.623.5Dorsal-caudal space10.6128.1-11.910.31.011.310.78.610.7Pectoral-pelvic space21.81218.2-25.320.81.920.620.323.120.9Pelvic-caudal space23.71223.0-27.024.61.122.726.821.324.1First dorsal-fin length13.61211.8-14.913.80.913.915.014.114.2First dorsal-fin anterior margin12.0129.3-13.211.61.112.010.110.910.8First dorsal-fin base length8.2125.3-9.08.01.19.38.58.67.9First dorsal-fin height9.8126.9-9.88.01.05.56.05.68.6First dorsal-fin inner margin6.2125.0-6.66.00.55.15.75.66.3First dorsal-fin posterior margin9.3127.0-10.68.90.95.28.77.89.8First dorsal-fin spine length3.9122.1-5.43.51.12.12.82.73.2First dorsal-fin spine base width1.0120.5-1.00.80.20.50.60.40.7Second dorsal-fin length12.31211.2-13.112.10.613.310.69.812.2Second dorsal-fin anterior margin10.2127.7-11.910.01.110.87.66.810.1Second dorsal-fin base length7.2126.2-8.27.10.68.85.84.87.0Second dorsal-fin height6.8124.5-7.95.71.03.93.33.66.0Second dorsal-fin inner margin5.3124.1-5.95.00.64.85.05.04.9Second dorsal-fin posterior margin6.3124.5-6.35.70.64.25.74.75.7Second dorsal-fin spine length4.2103.3-5.34.10.63.72.81.94.8Second dorsal-fin spine base width0.9120.7-1.10.80.11.00.60.50.7Pectoral-fin anterior margin length15.21212.3-17.714.81.911.813.515.413.7Pectoral-fin inner margin length9.5127.7-9.58.70.68.28.36.68.2Pectoral-fin base length5.3123.5-5.84.70.64.15.46.14.1Pectoral-fin posterior margin length11.7129.2-12.510.81.17.811.010.310.1Pelvic length11.5128.4-12.610.51.19.910.28.710.2Pelvic-fin inner margin length6.3123.1-7.95.21.14.85.05.14.9Dorsal caudal margin length24.41220.1-23.421.81.220.916.720.522.1Preventral caudal margin length12.11210.7-12.411.70.610.410.911.711.7Caudal fork width7.0126.1-7.76.90.56.46.97.47.0Head width at nostrils7.3126.6-8.27.30.57.16.85.27.6Head width at mouth12.21210.4-12.811.40.79.111.310.711.8Head width22.5129.4-15.813.33.210.511.013.312.5Trunk width18.3125.8-12.610.82.97.47.99.410.6Abdomen width15.5125.4-11.08.82.84.98.212.310.5Head height12.7128.3-12.510.91.37.811.08.79.6Trunk height10.3125.7-14.111.12.27.113.19.710.0Abdomen height7.7124.9-14.310.03.25.813.28.29.6Clasper outer length-41.5-4.93.41.61.64.3--Clasper inner length-43.4-8.45.62.43.17.4--表2 日本角鲨（Squalus mitsukurii，缩写S. mitsukurii）的外部量度以总长度百分比（%总长度，% TL）表示。同时一并列出了日本角鲨的副模标本（SU 7184，鉴定为棘角鲨S. acanthias）及尖吻角鲨S. acutirostris的标本量度值。总长度（TL）单位为毫米。缩写说明：H为正模标本；P为副模标本；N为标本数量；x为平均值；SD为标准差。 各外部量度具体数值如下（量度单位除总长度为毫米外，其余均为总长度的百分比）： 总长度（mm）：710.0 12 240.0–1120.0 643.9 344.0 277.0 635.0 975.0 536.0 尾前长：77.5 12 76.9–80.4 78.3 1.1 79.4 81.9 79.0 78.0 第二背鳍前长：61.0 12 58.4–63.9 60.8 1.6 60.6 64.6 63.9 59.7 第一背鳍前长：32.4 12 28.3–31.8 30.7 1.1 36.1 32.3 31.8 28.4 泄殖腔前长：50.0 12 46.4–52.7 49.2 1.9 50.5 52.8 46.7 47.6 腹鳍前长：47.9 12 43.1–50.0 46.8 1.8 47.7 49.3 47.2 45.0 胸鳍前长：24.6 12 20.0–24.7 22.4 1.4 21.5 24.3 23.6 21.6 头长：24.2 12 20.4–24.4 22.7 1.2 22.2 24.4 22.6 22.1 鳃裂前长：20.4 12 16.6–22.1 19.9 1.5 18.9 20.9 17.9 19.1 喷水孔前长：12.8 12 11.4–21.5 13.6 2.8 12.4 13.9 10.6 12.8 眶前长：7.3 12 6.9–10.7 7.9 1.0 7.3 8.2 7.3 8.1 鼻前长：5.6 12 4.1–6.4 5.1 0.6 5.3 4.7 5.1 4.7 口前长：10.3 12 7.6–11.5 9.8 1.0 10.5 10.4 9.5 10.2 鼻孔-唇沟间距：4.3 12 3.9–5.3 4.5 0.4 5.1 6.9 8.6 5.9 口宽：8.6 12 6.6–8.1 7.7 0.5 7.1 9.4 8.2 7.2 唇沟长：2.5 12 2.1–2.7 2.4 0.2 2.3 2.2 1.9 2.3 鼻孔间距：4.7 12 3.6–5.1 4.3 0.4 4.0 3.6 3.7 4.7 眶间距：9.3 12 7.7–9.8 8.9 0.7 8.2 9.6 9.2 8.5 眼长：3.6 12 3.1–5.2 3.8 0.5 3.1 3.8 2.8 4.7 眼高：0.9 12 1.2–2.5 1.7 0.4 2.0 1.6 1.7 2.1 喷水孔长：1.3 12 0.8–1.9 1.4 0.2 1.2 1.4 0.9 1.5 第一鳃裂高：1.7 12 1.5–2.8 2.0 0.4 1.4 2.4 1.3 1.9 第五鳃裂高：2.3 12 1.8–2.7 2.4 0.2 1.9 3.3 1.6 2.2 背鳍间距：21.1 12 21.7–25.9 23.6 1.6 18.0 28.3 24.6 23.5 背鳍-尾鳍间距：10.6 12 8.1–11.9 10.3 1.0 11.3 10.7 8.6 10.7 胸鳍-腹鳍间距：21.8 12 18.2–25.3 20.8 1.9 20.6 20.3 23.1 20.9 腹鳍-尾鳍间距：23.7 12 23.0–27.0 24.6 1.1 22.7 26.8 21.3 24.1 第一背鳍长：13.6 12 11.8–14.9 13.8 0.9 13.9 15.0 14.1 14.2 第一背鳍前缘长：12.0 12 9.3–13.2 11.6 1.1 12.0 10.1 10.9 10.8 第一背鳍基底长：8.2 12 5.3–9.0 8.0 1.1 9.3 8.5 8.6 7.9 第一背鳍高：9.8 12 6.9–9.8 8.0 1.0 5.5 6.0 5.6 8.6 第一背鳍内缘长：6.2 12 5.0–6.6 6.0 0.5 5.1 5.7 5.6 6.3 第一背鳍后缘长：9.3 12 7.0–10.6 8.9 0.9 5.2 8.7 7.8 9.8 第一背鳍棘长：3.9 12 2.1–5.4 3.5 1.1 2.1 2.8 2.7 3.2 第一背鳍棘基底宽：1.0 12 0.5–1.0 0.8 0.2 0.5 0.6 0.4 0.7 第二背鳍长：12.3 12 11.2–13.1 12.1 0.6 13.3 10.6 9.8 12.2 第二背鳍前缘长：10.2 12 7.7–11.9 10.0 1.1 10.8 7.6 6.8 10.1 第二背鳍基底长：7.2 12 6.2–8.2 7.1 0.6 8.8 5.8 4.8 7.0 第二背鳍高：6.8 12 4.5–7.9 5.7 1.0 3.9 3.3 3.6 6.0 第二背鳍内缘长：5.3 12 4.1–5.9 5.0 0.6 4.8 5.0 5.0 4.9 第二背鳍后缘长：6.3 12 4.5–6.3 5.7 0.6 4.2 5.7 4.7 5.7 第二背鳍棘长：4.2 10 3.3–5.3 4.1 0.6 3.7 2.8 1.9 4.8 第二背鳍棘基底宽：0.9 12 0.7–1.1 0.8 0.1 1.0 0.6 0.5 0.7 胸鳍前缘长：15.2 12 12.3–17.7 14.8 1.9 11.8 13.5 15.4 13.7 胸鳍内缘长：9.5 12 7.7–9.5 8.7 0.6 8.2 8.3 6.6 8.2 胸鳍基底长：5.3 12 3.5–5.8 4.7 0.6 4.1 5.4 6.1 4.1 胸鳍后缘长：11.7 12 9.2–12.5 10.8 1.1 7.8 11.0 10.3 10.1 腹鳍长：11.5 12 8.4–12.6 10.5 1.1 9.9 10.2 8.7 10.2 腹鳍内缘长：6.3 12 3.1–7.9 5.2 1.1 4.8 5.0 5.1 4.9 背尾鳍缘长：24.4 12 20.1–23.4 21.8 1.2 20.9 16.7 20.5 22.1 腹前尾鳍缘长：12.1 12 10.7–12.4 11.7 0.6 10.4 10.9 11.7 11.7 尾叉宽：7.0 12 6.1–7.7 6.9 0.5 6.4 6.9 7.4 7.0 鼻孔处头宽：7.3 12 6.6–8.2 7.3 0.5 7.1 6.8 5.2 7.6 口部处头宽：12.2 12 10.4–12.8 11.4 0.7 9.1 11.3 10.7 11.8 头宽：22.5 12 9.4–15.8 13.3 3.2 10.5 11.0 13.3 12.5 躯干宽：18.3 12 5.8–12.6 10.8 2.9 7.4 7.9 9.4 10.6 腹部宽：15.5 12 5.4–11.0 8.8 2.8 4.9 8.2 12.3 10.5 头高：12.7 12 8.3–12.5 10.9 1.3 7.8 11.0 8.7 9.6 躯干高：10.3 12 5.7–14.1 11.1 2.2 7.1 13.1 9.7 10.0 腹部高：7.7 12 4.9–14.3 10.0 3.2 5.8 13.2 8.2 9.6 交合突外长：- 4 1.5–4.9 3.4 1.6 1.6 4.3 - - 交合突内长：- 4 3.4–8.4 5.6 2.4 3.1 7.4 - -