358 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



The genus is not found in any portion of the Malayan region. In 

 the latter it is represented by the genus usually known as Lycodon."' 



KEY TO THE SPECIES OP DINODON. 



a' Anal entire; a preocular. 



^' Scales smooth; less than 210 ventrals. 

 c' Ventrals 189 (185)-209 (average 198); cross-bars on lx)dy and tail more than 



60 D. 7'ufozonatum, p. 358 



c- Ventrals 178-195 (average 189); cross-bars on ]>ody and tail less than GO. 



D. rufozonatitm walli, p. 364 

 h- Scales feebly keeled; more than 210 ventrals. 



c^ Portion of rostral visible from above half as long as the interprefrontal suture. 



D. seinicarinattmi, p. 366 



<"'- Rostral just visible from above D. septentrionale, p. 370 



a- Anal divided ; no preocular D. orient ale, p. 372 



DINODON RUFOZONATUM b (Cantor). 



1840. Lycodon rufozonatus Cantor, Zool. Chusan (pi. xi) (type-locality, Chusan, 

 China; type in Brit. Mus.; Cantor, collector). — Guenther, Kept. Brit. 

 India, 1864, p. 319 (Chusan); Ann. Mag. Nat. Hist. (4), I, 1868, p. 426 

 (Formosa). — Jan, Icon. Ophid., livr. 36, 1870, pi. iv, fig. 3 (Chusan). — 

 Steindachner, Sitz. Ber. Wien Akad. Wiss., Math. Naturw. CL, LXII, 

 Pt. 1, 1870, p. 338; author's separate, p. 13 (Peking). — Mueller, Verh. 

 Naturf. Ges. Basel, X, Pt. 1, 1892, p. 205 (Vladivostok).— Dmorfo?i rn/o- 

 zonatus Peters, Sitz. Ber. Ges. Naturf. Fr. Berlin, 1881, p. 89.— Bou- 

 lenger. Cat. Snakes Brit. Mus., I, 1893, p. 361 (Hainan; Formosa; 

 Tsushima; northern China). — Boettger, Kat. Sclil. Mus. Senckenberg., 

 1898, p. 38 (part: Formosa). — Wall, Proc. Zool. Soc. London, 1903, pp. 

 89, 100 (part: Formosa; Korea; Tsushima). — Werner, Abh. Bayer. 

 Akad. Wiss. (Muenchen), II Klasse, XXII, Pt. 2, 1904, p. 354 (Ningpo 

 Mts. near Shanghai). 



1854. Dinodon canccllatum Dumeril and Bibron, Erpet. Gen., VII, Pt. 1, p. 477 

 (type-locality unknown; type in Paris Mus.). 



1856. Coronella striata Hallowell, Proc. Phila. Acad., 1856, p. 152 (type-locality, 

 Ningpo, China; types in Phila. Acad. Mus.; McCartee, collector). — 

 Euniesodon siriatus Cope, Proc. Phila. Acad., 1860, p. 263. 



1885. Dinodon rufozonatus var. formosana Boettger, Offenbach. Ver. Naturk. 



, 24-25 Ber., p. 125 (type-locality, Formosa; type in Mus. Senckenb.); 



26-28 Ber., 1888, p. 144 (Formosa). 



a Lycodon aulicus {Coluber aulicus Linn.eus, Syst. Nat., 10 ed., I, 1758, p. 220) is 

 credited to Foi'mosa by Doctor Wall (Proc. Zool. Soc. London. 1903, p. 88) on the 

 strength of a specimen in the Hongkong City Hall Museum now so labeled. He states 

 that the specimen from Hongkong , which Boettger. upon the authority of von Moellen- 

 dorff, recorded as being in that museum (Offenbach. Ver. Naturk. 26-28 Ber., 1888, 

 p. 84) is found there no longer, but, on the contrary, that the only specimen of L. 

 aulicus in that institution is from Formosa. It is greatly to be aj^prehended that the 

 specimen in question, or rather its label, has been a victim of the typhoon mentioned 

 by Doctor Wall in the introduction to his paper (p. 84). He there expressly states 

 that the circumstances render the accuracy of some of the records open to question. 

 In view of the probability that the original Hongkong specimen and the one now 

 labeled as from Formosa are one and the same, I find it inadvisable to admit Lycodon 

 aulicus to the fauna of Formosa on the strength of this record. 



b Signifying with red belts, or bands. 



