874 13. COLUBR1D3E 



199. Chilomeniscus stramineus (Cope) 

 DOTTED BURROWING SNAKE 



Chilomeniicus stramineus COPE, Proc. Acad. Nat. Sci. Phila., 1860, p. 339 

 (type locality, Cape St. Lucas, Lower California, Mexico); 

 COPE, Proc. Acad. Nat. Sci. Phila., 1861, p. 302; COPE, Bull. U. S. 

 Nat. Mus., No. i, 1875, pp. 35, 92; YARROW, Bull. U. S. Nat. Mus., 

 No. 24, 1883, pp. 13, 86; COPE, Bull. U. S. Nat. Mus., No. 32, 1887, 

 p. 81; BELDING, West. Amer. Scientist, Vol. Ill, No. 24, p. 98; 

 COPE, Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 594 (part); Bou- 

 LENGER, Cat. Snakes Brit. Mus., Vol. II, 1894, p. 573 (part); VAN 

 DENBURGH, Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 1895, p. 138; 

 MOCO.UARD, Nouv. Arch. Mus. Hist. Nat., Ser. 4, Vol. i, 1899, 

 p. 316; COPE, Report U. S. Nat. Mus. for 1898, 1900, p. 949; STEJ- 

 NEGER & BARBOUR, Check List N. Amer. Amph. R~pt., 1917, 

 p. 94, VAN DENBURGH & SLEVIN, Proc. Cal. Acad. Sci., Ser. 4, 

 Vol. XI, 1921, p. 52; NELSON, Mem. Nat. Acad. Sci., Vol. XVI, 

 1921, pp. 114, 115; TERRON, Mem. y Rev. Soc. Cient. Antonio 

 Alzate, Vol. 39, 1921, p. 164. 



Carphophif straminea CARMAN, Mem. Mus. Compr. Zool., Cambr., 

 Vol. VIII, No. 3, 1883, pp. 99, 166; CARMAN, Bull. Essex Inst., 

 Vol. XVI, No. i, p. 32- 



Chilomeniscus stramineus stramineus COPE, Proc. U. S. Nat. Mus., 

 Vol. XIV, 1902, p. 595. 



Description. Head rather wide, little distinct from 

 neck. Snout broad, rounded, greatly depressed, pointed in 

 profile. Rostral plate very large, broad, prominent, exten- 

 sively reverted on upper surface of snout, usually not reach- 

 ing prefrontals, bounded behind by the first supralabial and 

 a large plate corresponding to the internasal and nasals 

 merged. Plates on top of head are the naso-internasals, a 

 pair of prefrontals, a frontal, supraocular of each side, and 

 a pair of rather small parietals. Posterior nasal small, some- 

 times merged with anterior nasal and internasal. No loreal. 

 One preocular. Two postoculars. Temporals one followed 

 by one or two. Supralabials seven, third and fourth reach- 

 ing eye. Inferior labials usually eight, sometimes seven, 



