186. sTENORHINA. 229 
1. Ogmius acutus. 
Ogmius varians (non Jan), Cope, Proc. Amer. Philos, Soc. xi, 1869, 
p. 162 
acutus, Cope, Proc. U.S. Nat. Mus, ix. 1886, p. 189, and Bull. 
US. Nat. Mus, no. 32, 1887, p. 82. 
Rostral plate produced, acute-angled, flat above; frontal longer 
than broad; one pre- 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. & Bibr. Mém. Ac. Sc. xxiii. 1853, p. 490, and Erp. 
Gén. vii. p. 865 (1854) ; Giinth. Cat. Col. Sn. p. 246 (1858) ; Jan, 
Arch. Zool. Anat. Phys. ii, 1862, p. 63; Bocourt, Miss. Sc. Mex., 
Rept. p. 592 (1883). 
Microphis, Hallow. 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 
neck; 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 
rounded. Tail moderate or short; subcaudals in two rows. 
Mexico, Central America, Colombia, Ecuador, 
1. Stenorhina degenhardtii. 
Calamaria degenhardtii, Berthold, Abh. Ges. Wiss. Gotting. iii. 1846, 
p- 8, pl. i. figs. 3 & 4; Peters, Mon. Berl. Ac. 1861, p. 461. 
Stenorhina ventralis, Dum. § Bubr. 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, pl. Ixx. figs. 1 & 2; 
Giinth. 1. c.; Garm. N. Am. Rept. p. 85 (1883) ; Bocourt, Miss. Sc. 
Mex., Rept. p. 596, pl. xxxvii. fig. 8 (1886). 
Microphis quinquelineatus, Hallow. Proc. Ac. Philad. 1854, p. 97, 
and Journ. Ac. Philad. (2) iii. 1855, p. 33, pl. iv. 
Stenorhina kennicottiana, Cope, Proc. Ac. Philad. 1860, p. 242, and 
Journ. Ac. Philad. (2) viii. 1876, p. 142. 
qusqsiipeste, Cope, l. c. p. 243; Bocourt, 1. c. p. 597, pl. xxxvii. 
Eee 
lactea, Cope, Proc. Ac. Philad.1861, p. 303. 
degenhardtii, Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 63, and 
Icon. Gén, 48, pl. ii. figs. 5 & 6 (1876) ; Cope, Journ. Ac. Philad. 
(2) viii. 1876, Ss 142; Bocourt, 1. c. p. 594, pl. xxxvii. figs. 8 & 9; 
Giinth, Biol. C-Am., Rept. p. 158 (1895). 
Bergenia mexicana, Steind. Novara, Rept. p. 92, figs. (1867). 
