Table 3. External measurements for S in Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited

Table 3. External measurements for S. japonicus expressed as percentage of total length (% TL). Morphometric data of S. nasutus is also provided for comparisons. TL is expressed in millimeters. N: number of specimens; x: mean; SD: standard deviation.
S. japonicusS. nasutusxSDNeotypeNNTotal length (mm)645.015281.0-560.09362.0-580.0444.997.2Precaudal length79.71577.3-80.7979.6-81.579.90.9Pre-second dorsal length62.01559.1-62.4960.8-64.661.61.1Pre-first dorsal length31.81530.0-33.8931.2-32.932.20.7Pre-vent length47.31547.0-50.4946.1-51.748.41.2Prepelvic length43.71544.8-47.9944.5-48.745.91.1Prepectoral length22.51522.0-24.0922.8-25.223.30.7Head length23.31523.0-24.5923.5-26.823.90.8Prebranchial length18.71519.4-21.6920.3-22.120.50.8Prespiracular length12.81513.5-15.4913.7-15.614.50.6Preorbital length8.7158.3-10.199.2-10.49.50.5Prenarial length5.9155.8-7.296.6-7.56.80.4Preoral length10.71511.1-12.5911.8-13.012.00.5Inner nostril-labial furrow space4.6154.4-5.594.5-5.65.00.3Mouth width6.4154.3-7.896.4-7.36.70.7Labial furrow length2.0151.9-2.491.9-2.42.10.2Internarial space4.1154.1-5.494.3-5.44.60.4Interorbital space7.5157.6-9.198.2-9.28.40.5Eye length3.8153.8-5.294.2-5.34.50.4Eye height1.9151.4-2.291.8-2.21.90.2Spiracle length1.2151.0-1.891.1-1.51.40.2First gill-slit height1.3151.3-2.091.3-1.81.50.2Fifth gill-slit height1.6151.5-2.191.8-2.21.90.2Interdorsal space24.81518.4-23.5923.0-25.223.11.5Dorsal-caudal space11.4159.5-11.1910.9-13.210.80.8Pectoral-pelvic space18.61518.7-22.6917.8-23.119.81.4Pelvic-caudal space27.91523.6-28.0925.0-28.826.41.3First dorsal-fin length12.61512.0-14.7911.8-13.312.70.7First dorsal-fin anterior margin10.1159.6-13.399.9-11.510.70.8First dorsal-fin base length6.7156.2-8.696.8-8.07.20.5First dorsal-fin height6.6156.6-10.096.9-7.77.40.7First dorsal-fin inner margin5.9155.1-6.695.0-5.75.50.4First dorsal-fin posterior margin7.8155.7-10.096.8-8.87.60.9First dorsal-fin spine length3.8142.0-3.582.4-3.83.00.5First dorsal-fin spine base width0.7150.5-0.890.6-0.80.70.1Second dorsal-fin length12.81512.3-16.1910.1-13.012.91.2Second dorsal-fin anterior margin11.11510.5-14.598.1-11.211.01.3Second dorsal-fin base length7.7156.9-10.695.9-8.48.01.1Second dorsal-fin height6.1155.4-7.394.8-5.45.90.7Second dorsal-fin inner margin4.9154.3-5.594.0-4.94.90.4Second dorsal-fin posterior margin4.4154.4-6.194.5-5.55.10.5Second dorsal-fin spine length5.6144.1-5.693.9-4.94.70.6Second dorsal-fin spine base width0.7150.7-1.090.7-1.10.80.1Pectoral-fin anterior margin length13.11510.9-14.2912.4-14.212.70.9Pectoral-fin inner margin length7.5157.8-8.997.2-8.58.20.5Pectoral-fin base length4.6153.8-4.794.1-5.04.40.4Pectoral-fin posterior margin length8.6156.8-10.196.2-8.97.90.9Pelvic length11.7159.6-12.499.3-12.610.90.8Pelvic-fin inner margin length7.3154.6-6.194.3-7.05.50.8Dorsal caudal margin length20.21519.6-21.8918.1-19.819.90.8Preventral caudal margin length10.9156.6-11.7910.2-12.410.91.0Caudal fork width6.2156.0-7.496.2-7.56.70.4Head width at nostrils6.3156.8-8.196.9-8.37.40.5Head width at mouth9.71510.0-11.9910.2-11.310.70.5Head width11.61511.0-13.0911.2-12.711.70.5Trunk width9.7159.1-10.898.7-12.010.00.7Abdomen width8.6156.9-10.996.3-9.28.81.2Head height9.4158.5-10.698.9-9.89.50.6Trunk height10.2158.3-11.698.9-10.310.00.9Abdomen height10.0158.7-12.298.3-12.210.11.1Clasper outer length4.861.4-4.542.1-5.63.31.7Clasper inner length7.562.8-7.944.3-9.15.82.6