186. STENOKHINA. 229 



1. Ogmius acutus. 



Ogmius vaxiana (non Jan), Cope, Fi-oc. Amer, Philos. Soe. xi. 1869, 



p. 162. 

 acutus, Cope, Proc. U.S. Nat. Mus. ix. 1886, p. 189, and Bull. 



U.S. Nat. Mus. no. 32, 1887, p. 82. 



Rostral plate produced, acute-angled, flat above ; frontal longer 

 "than broad ; one prse- and two postoculars ; temporals 1 +2 ; seven, 

 upper labials, third and fourth entering the eye. Scales in 17 rows, 

 Ventrals 127 ; anal divided ; subcaudals 32. Greyish above, with 

 .a dorsal series of transverse dark spots ; sides and head, including 

 lips, unspotted. 



Total length 249 millim. ; tail 40. 



W. Tehuantepec. 



186. STENORHINA. 



Stenorhina, Dum. Sr Bih: Mint. Ac. 8c. xxiii. 1853, p. AWi,and Erp. 

 Gen. vii.p. 865 (1854) ; Gunth. Cat. Col. Sn. p. 246 (1858) ; Jan, 

 Arch. Zool. Anat. Phys. ii. 1862, p. 63 ; Bocourt, Miss. So. Mex., 

 Sept. p. 592 (1883). 



Microphis, Sallow. Proc. Ac. Philad. 1854, p. 97. 



Bergenia, Steind. Novara, Rept. p. 92 (1867). 



Maxillary teeth small, equal, 13 or 14, followed by a pair of 

 feebly enlarged grooved teeth situated below the posterior border 

 of the eye ; mandibular teeth equal. Head small, not distinct from 

 meek ; eye small, with round pupil ; nostril between two nasals, the 

 anterior of which is fused with the internasal ; loreal often absent. 

 Body cylindrical ; scales smooth, without pits, in 17 rows ; ventrals 

 lounded. Tail moderate or short ; subcaudals in two rows. 



Mexico, Central America, Colombia, Ecuador. 



1. Stenorhina degenhardtii. 



Calamaria dfegenbardtii, Berthold, Abk. Ges. Wiss. G'otting. iii. 1846, 



p. 8, pi. i. figs. 3 & 4 ; Peters, Mon. Berl. Ac. 1861, p. 461. 

 Stenorhina ventralis, Bum. ^ Bibr. vii. p. 867 (1854) ; Giinth. Cat. 



p 246 (1858) ; Cope, Proc. Amer. Philos. Soc. xi. 1869, p. 162. 

 freminvillii, Dum. ^ Bibr. t. c. p. 868, pi. Ixx. figs. 1 & 2 ; 



Gunth. I. c. ; Garm. N. Am. Rept. p. 85 (1883) ; BocouH, Mm. Sc. 



Mex., Rept. p. 596, pi. xxxvii. fig. 8 (1886). , ,„,, q- 



Microphis quinquelineatus, Hallow. Proc. Ac. Philad. 1854, p. W, 



and Joum. Ac. Philad. (2) iii. 1855, p. 33,pl. ly- 

 Stenorhina kennicottiana, Cope, Proc. Ac. Philad. 1860, p. 242, and 



Joum. Ac. Philad. (2) viii. 1876, p. 142. 

 quinquelineata, Cope, I. c. p. 243 ; Bocourt, I. c. p. 597, pi. xxxvu. 



• ?'lactea, Cope, Proc. ^c. PAfcrf. 1861, p. 303. _ 



degenhardtii, Jan, Arch. Zool. Anat. Phys. ii. 1862, v. 63, and 



Icon.G^n. 48, pi. ii. figs. 5 &6 (1876) ; Cope, Joum. Ac. Philad. 



(2) viii. 1876, p. 142 ; Bocourt, I. c. p. 594, pi. xxxvu. figs. 8 & 9 ; 



Giinth. Biol. C.-Am., Rept. p. 158 (1895). 

 Bergenia mexicana, Steind. Novara, Rept. p. 92, ligs. (l»b/;. 



