22. cHERSODROMUS, 
ef. 2 (W144; ©. 4 Honduras. 
& hgr. (V. 131, 0. 58). , 
g-t. g (V. 134; 0.55) British Honduras, F, D, Godman & O, 
& We, 139 ; Salvin, Esqrs. (P.} 
k. § (V. 187; 0.56). British Honduras. Colonial Exhibition. 
ug (V. dl; 0.67). Belize 
. So (V. 139,132; Teapa, Tabasco. Mr.H. H. Smith MA 
56 & 9 (V. F.D, Godman & O, 
Pay ah ( 2) Jalapa, Mexi Mi Hoe b bie 
. 148; C. exico. “Mr. ; 
7 9 SW Yaa, —_ | = 
—soyg. (V. 186; C. 50). 
es ¢-0, av. 141; €.?), Mexico. Mr, Hugo Finck [C.}. 
-. 9¢ pats 01 Ae 
oe ewe , 132 4 Mexico. M. Sallé [C.1, 
187; 0.60). °° 3 
= 2 (V. 145; C. 46). Mexico, 
22. CHERSODROMUS. 
Chersodromus, Reinh. Vid. Meddel. 1860, p. 242; Jan, Arch. Zool. 
oa Phys. ii. 1862, p. 25; Bocourt, Miss. Sc. Mex., Rept. p. 552 
Opisthiodon, Peters, Mon. Berl. Ac, 1861, p. 460. 
Maxillary bone very short, not extending forwards beyond the 
ines, with about 10 small, equal teeth ; mandibular teeth equal. 
small, slightly distinct from neck; eye very small, with 
vertically subelliptical pupil; posterior nasal concave; a single pra- 
frontal; no preocular, loreal and prefrontal entering the eye. 
Body moderate, cylindrical; scales striated and keeled, without 
its, in 17 rows; ventrals rounded. Tail moderate; subcaudals 
in two rows. Hypapophyses developed throughout the vertebral 
“Mexico and Guatemala. 
1. Chersodromus liebmanni. 
Chersodromus liebmanni, Reinh. Vid. Meddel. 1860, P. 243; Peters, 
Mon. Berl. Ac. 1861, p. 617; Jan, Arch. Zool. Anat. Phys. ii. 
1 
Se, Rept. p. 552, pl. xxxiv. fig. 8 (1883). 
— nigricans, Rewnh. i. De 245, 
Opisthiodon torquatus, Peters, Mon. Berl. Ac. 1861, p. 461. 
Rostral once and a half as broad as deep, just visible from above ; 
internasals small ; frontal broader than long, scarcely longer than 
the prefrontal, much shorter than the parietals; loreal a little 
longer than deep; two postoculars, upper usually fused with the 
supraocular, which is very small; temporals 142; seven upper 
labials, third and fourth entering the eye; five lower labials in 
Bp. 25, and Icon. Gén. 12, pl. iii. fig. 2 (1865); Bocourt, Mise. 
ex. 
yr 
