18. ISCHNOGNATHTIS. 287 



Storeria dekayi, Baird .§■ Oir. Cat. N. Am. liept. p. 136 (1853) ; 



Garm. N. Am. Rept. p. 31, pi. i. fig. 1 (1883), and Bull. JEsse.v 



Inst. xxiv. 1892, p. 105 ; S. Garm. Bull, lllin. Lab. iii. 1892, 



p. 278. 

 lachnognathus dekayi, part., Bum,. ^ Bibr. Tii. p. 607 (1864). 

 Storeria tropica, Cope, Proc. Am. Philos. Soc. xxii. 1885, p. 175. 

 dekayi, var. anomala, Dugh, Proc. U.S. Nat. Mus. xi. 



1888, p. 9, iig. 



Rostral broader than deep, visible from above ; nasal divided, in 

 contact with the prseocular ; internasals broader than long, much 

 shorter than the prsefrontals ; frontal about once and a half as 

 long as broad, longer than its distance from the end of the snout, 

 ;shorter than the parietals ; one (rare two) prae- and two post- 

 oculars ; temporals 1 + 1 or 1 + 2 ; seven (rarely six) upper 

 labials, third and fourth entering the eye ; four lower labials in 

 contact with the anterior chin-shields ; posterior chin-shields as 

 long as the anterior and usually in contact with each other in front. 

 Scales in 17 rows, all keeled. Ventrals 120-145 ; anal divided ; 

 subcaudals 40-63. Pale olive-brown, greyish or reddish above, 

 with or without a lighter vertebral stripe and two dorsal series of 

 smaU. black spots ; crown of head often blackish ; a blackish 

 transverse blotch on each side of the nape ; frequently a black spot 

 below the eye; ventrals yellowish, usually with black dots on the 

 sides. 



Total length 370 millim. ; tail 75. 



North and Central America, from Canada to Guatemala. 



a. 2 (V. 127 ; C. 48). Canada. Chatham Museum [P.], 



b-d. 2 (V. 128, 125 ; 0. Bloomington, In- C. Bollman, Esq. [C.]. 



40, ?) & hgr. (V. 120 ; diana. 



0.43). 



e. 2 (V. 138 ; C. 46). Illinois. Smithsonian Instit. [P.]. 



/. tJ (V. 135 ; C. 63). New Orleans. M. SaUS [0.]. 



o-k. (J (V. 126; 0. 51) & Texas. 



$ (V. 137, 137, 139; 



0.50,51,47). 



I, m. S (V. 136 ; 0. 65) Duval Co., Texas. W. Taylor, Esq. [0.]. 



& 5 (V. 132 ; C. 56). 



n. $ (V. 136; 0. 47). Guatemala. 0. Salvin, Esq. [C.]. 



3. Ischnognathus occipitomaculatus. 



Coluber occipitomaculatus, Storer, Pep. Fish. 8f Pept. Mass. p. 230 



(1839). 

 venustus, Hallow. Proc. Ac. Philad. 1847, p. 278, pi. — , and 



1849, p. 245. 

 Storeria ocoipitomaculata, Baird S/- Gir. Cat. N. Am. Pept. p. 137 



(1853) ; Baird, Serp. of N. York, p. 26 (1854) ; Garm. N. Am. 



Pept. p. 30, pi. i. fig. 2 (1883) ; PC. Garm. Bull. Plin. Lab. iii. 



1892, p. 278. 

 Ischnognathus dekayi, part., Dum. S/- Bibr. vii. p. 507 (1864). 

 occipitomaculatus, Giinth. Cat. p. 81 (1858) ; Jan, Arch. 



Zool. Anat. Phys. iii. 1865, p. 240, and Icon. Gen. 30, pi. i. fig. 2 



(1868). 



