Table with summarized characters used for osteological comparison of Platyceps spp. and related genera (Hemorrhois and Spalerosophis). LC / WN: ratio length of centrum to least width of neural arch, LC / WP: ratio length of centrum to distance between outer edges of articular facets of prezygapophyses, LN / WN: ratio length of neural spine to least width of neural arch. (1) Data from Schaetti (1987) in square brackets; (2) Data from Schaetti et al. (2014) in square brackets; (3) Data for one specimen only: NMW 25465: 2, paratype from Salem, Tamil Nadu state, India. in Revealing two centuries of confusion: new insights on nomenclature and systematic position of Argyrogena fasciolata (Shaw, 1802) (auctt.), with description of a new species from India (Reptilia: Squamata: Colubridae)

Table with summarized characters used for osteological comparison of Platyceps spp. and related genera (Hemorrhois and Spalerosophis). LC/WN: ratio length of centrum to least width of neural arch, LC/WP: ratio length of centrum to distance between outer edges of articular facets of prezygapophyses, LN/WN: ratio length of neural spine to least width of neural arch. (1) Data from Schätti (1987) in square brackets; (2) Data from Schätti et al. (2014) in square brackets; (3) Data for one specimen only: NMW 25465:2, paratype from Salem, Tamil Nadu state, India. TaxonLateral processes of premaxillaAscending process of premaxillaTLn/TWnTLln/LnsMesial process of pterygoidPterygoid process at basioccipitalLC/WNLC/WPLN/WNPlatyceps plinii comb. nov.individually short or long, one tipshort, in contact with nasals0.93-1.0440%-50%present only in 60% of examined specimensindividually unstructured or structured1.21-1.590.73-0.950.81-1.01Platyceps josephi sp. nov.short, one tipshort, in contact with nasals1.16-1.1847%-58%presentindividually unstructured or structured1.54 30.8531.023Platyceps florulentus 1long, two tipsshort, in contact with nasals1.2468%absentstructured1.70 [1.32-1.48]0.85 [0.68-0.79]1.15 [0.95-1.05]Platyceps rhodorachis 2long, one tip or stoutlong, not in contact with nasals1.27-1.3960%-77%absentstructured1.60-1.70 [1.41-1.55]0.83-0.88 [0.55-0.64]1.20-1.27 [1.09-1.25]Platyceps ventromaculatus 1long, stoutlong, in contact with nasals1.2856%absentunstructured1.68 [1.49-1.51]0.86 [0.76-0.78]1.10 [1.16-1.18]Hemorrhois nummifer 1//////[1.22-1.39][0.63-0.71][0.84-1.07]Hemorrhois ravergieri 1//////1.61 [1.20-1.41]0.86 [0.66-0.70]0.80 [0.87-1.16]Spalerosophis diadema//////1.080.620.80本数据集为用于游蛇属（Platyceps spp.）及其近缘属（红鼠蛇属Hemorrhois、沙鼠蛇属Spalerosophis）骨骼学比较的特征汇总表。相关比值定义如下：LC/WN为椎体长度与神经弓最小宽度的比值；LC/WP为椎体长度与前关节突关节面外缘间距的比值；LN/WN为神经棘长度与神经弓最小宽度的比值。(1) 方括号标注数据引自Schätti（1987）；(2) 方括号标注数据引自Schätti等（2014）；(3) 仅基于1号标本：NMW 25465:2，即采自印度泰米尔纳德邦塞勒姆的副模标本。 | 分类群 | 前上颌骨侧突 | 前上颌骨升突 | TLn/TWn | TLln/Lns | 翼骨内侧突 | 基枕骨区翼骨突 | LC/WN | LC/WP | LN/WN | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 普林尼游蛇（新组合，*Platyceps plinii* comb. nov.） | 单端，长短不一 | 短，与鼻骨相接 | 0.93~1.04 | 40%~50% | 仅在60%检视标本中存在 | 个体间无结构或具结构 | 1.21~1.59 | 0.73~0.95 | 0.81~1.01 | | 约瑟游蛇（新种，*Platyceps josephi* sp. nov.） | 单端，短 | 短，与鼻骨相接 | 1.16~1.18 | 47%~58% | 存在 | 个体间无结构或具结构 | 1.54 | 0.85 | 1.02 | | *Platyceps florulentus* 1 | 具两末端，长 | 短，与鼻骨相接 | 1.24 | 68% | 不存在 | 具结构 | 1.70 [1.32~1.48] | 0.85 [0.68~0.79] | 1.15 [0.95~1.05] | | *Platyceps rhodorachis* 2 | 单端或粗壮末端 | 长，不与鼻骨相接 | 1.27~1.39 | 60%~77% | 不存在 | 具结构 | 1.60~1.70 [1.41~1.55] | 0.83~0.88 [0.55~0.64] | 1.20~1.27 [1.09~1.25] | | *Platyceps ventromaculatus* 1 | 粗壮，长 | 长，与鼻骨相接 | 1.28 | 56% | 不存在 | 无结构 | 1.68 [1.49~1.51] | 0.86 [0.76~0.78] | 1.10 [1.16~1.18] | | *Hemorrhois nummifer* 1 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | [1.22~1.39] | [0.63~0.71] | [0.84~1.07] | | *Hemorrhois ravergieri* 1 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 1.61 [1.20~1.41] | 0.86 [0.66~0.70] | 0.80 [0.87~1.16] | | *Spalerosophis diadema* | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 无有效数据 | 1.08 | 0.62 | 0.80 |