282 COLUBRID. 
1. Tretanorhinus variabilis. 
Tretanorhinus variabilis, part., Dum. § Bibr. vii. p. 349, pl. Lxxx. 
fig. 4 (1854); Jan, Arch, Zool. Anat. Phys, iii. 1865, p. 254; 
Gundlach, Erp. Cub. p. 80 (1880). 
Topidqaees cubanus, Gundlach, Mon. Berl. Ac. 1861, p. 1001, and 
lic. p. 81. 
Tretantehinhs variabilis, Cope, Proce. Ac. Philad. 1861, p. 298, and 
1868, p. 809; Bocourt, Le Natur. 1891, p. 122. 
ar wagleri, Jan, J. c. p. 247, and Icon. Gén, 28, pl. i. fig. 1 
(1868). 
‘Tretanorhinus variabilis, var, adnexus, Jan, /.c. ; Bocourt, 1. ec. p. 208. 
Helicops variabilis, part., Garman, N. Am. Rept. p. 33 (1883). 
Head narrow and elongate; eye rather small; nasals in contact 
with each other behind the rostral, or narrowly separated ; inter- 
nasals small, longer than broad; frontal as long as its distance 
from the end of the snout, shorter than the parietals; loreal 
elongate ; one or two pre- and two postoculars ; temporals 1+2; 
eight upper labials, fourth entering the eye; four or five lower 
labials in contact with the anterior chin-shields ; posterior chin- 
shields a little longer than the anterior and separated from each 
other by scales. Scales in 19 rows, keeled, the keels strongest on 
the tail. Ventrals 131-164; anal divided; subcaudals 50-78. 
Olive or blackish above, with or without blackish cross bands; @ 
more or less distinct light lateral streak on the second and third 
rows of scales; a dark streak on each side of the head, passing 
through the eye; belly orange or red, dotted or spotted all over 
with brown, or brown dotted with paler. 
Total length 660 millim ; tail 160. 
Cuba. 
a-b., 3 (V. 160, 158; C. 69, 68). Cuba. 
ce. 3 (V. 155; CO. 68). Cuba. Prof. Peters [ P.]- 
2. Tretanorhinus nigroluteus. 
Tretanorhinus variabilis, part., Dum. § Bibr. vii. p. 349 (1854) =: 
Jan, Arch. Zool. Anat, Phys. iii, 1865, p. 254. 
nigroluteus, Cope, Proc. Ac. Philad. 1861, p. 298, and 1868, 
. 809; Giinth. Ann. § Mag. N. H. (4) ix. 1872, p. 27; fa 
roc. Am. Philos. Soc, xxii. 1885, p. 183; Bocourt, Le Natur. 1891, 
. 122. 
ras oats agassizii, Jan, l.c. p. 248, and Icon. Gén. p. 28, pl. ii. fig. 1 
(1868). 
variabilis, part., Garman, N. Am. Rept. p. 38 (1883). 
—— nigroluteus, Garm. l, ce. p. 144. 
bifrenatus, Bocourt, Bull. Soc. Philom. (7) viii. 1884, p. 194. 
Regina nigrolutea, Cope, Bull. U.S, Nat. Mus. no, 32, 1887, p. 74. 
Tretanorhinus lateralis, Bocourt, /. e. 
Very closely allied to the preceding, but differing in the following — 
points :—Usually two loreals, anterior smallest; two or three 
preoculars; posterior chin-shields in contact with each other — 
anteriorly ; scales in 21 rows. Olive or blackish above, uniform or — 
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