182. HYDROCALAMUS. 209 
a. Hgr. (V. 140; 0.94). Belize. F. D. Godman, Es dt} 
b-d. ¢ (V.137; C.91), Stann Creek, Brit. Rev. J. Paleraon | eh 
2 (Vv. 142; C.P), & Honduras. 
her. (V. 139; C. 85). 
e. Her. ¢ (V. 1385; ——P?P (Type.) 
C. 93). 
9. Erythrolamprus piceivittis. 
Sag: tiny, piceivittis, Cope, Proc. Amer. Philos, Soc. xi, 1869, 
p. 149; Bocourt, Miss. Sc. Mex., Rept. p. 656, pl. xli. fig. 2 
(1886). ; 
Tachymenis teeniata, Peters, Mon. Berl. Ac. 1869, p. 876. 
piceivittis, Giinth. Ann. § Mag. N. H. (4) ix. 1872, p. 20, and 
Biol. C.-Am., Rept. p. 160 (1895). 
Erythrolamprus piceivittis, Cope, Bull. U.S. Nat. Mus. no, 32, 1887, 
p. 77. 
Snout moderate, rather strongly depressed, rounded. Rostral 
nearly twice as broad as deep, visible from above; internasals much 
shorter than the preefrontals; frontal once and a half as long as 
broad, as long as its distance from the end of the snout, shorter 
than the parietals ; loreal a little longer than deep; one preocular, 
with a subocular below it; two postoculars; temporals 1+ 2; eight 
upper labials, fourth and fifth entering the eye; five lower labials 
in contact with the anterior chin-shields, which are as long as or a 
little longer than the posterior. Scales in 25 rows. Ventrals 158- 
169; anal divided; subcaudals 82-93. Dark brown above, with 
two whitish longitudinal streaks which extend to the canthi 
rostrales ; these streaks may be interrupted on the occiput; upper 
lip and sides brownish white; lower parts uniform white. 
Total length 520 millim.; tail 150. 
Mexico. 
a. 3 (V. 162; CO. 91). Yucatan, 
b. 2 (V. 164; C. 93). Mexico. 
182. HYDROCALAMUS. 
Homalopsis, part., Dum. § Bibr. Erp. Gén. vii. p. 967 (1854). 
Hydrocalamus, Cope, Proc. Amer. Philos. Soc, xxii. 1885, p. 176; 
Bocourt, Miss. Sc. Mex., Rept. p. 811 (1895). 
Maxillary teeth 12, gradually increasing in size and followed, 
after an interspace, by a pair of feebly enlarged grooved fangs 
situated behind the vertical of the eye; mandibular teeth subequal. 
Head slightly distinct from neck; eye small, with round pupil; 
nasal entire or semidivided. Body cylindrical; scales smooth, 
without apical pits, in 21 rows; ventrals rounded. Tail moderate; 
subcaudals in two rows. 
Central America, 
VOL, III. P 
