294 COLUBRID. 
o-u. 3 (V. 181, 180; C. Demerara. Mr. Snellgrove [C.]. 
89, 88) & P (V. 178, 
174, 174, 182, 182; C. 
82, 84, 76, 82, 102). 
v-n. do (V. 181, 181,174; Berbice. 
C. 90, 95, 86), 2 (V.176, 
173, 174, 177, 172, 180; 
C. 84, 85, 74, 79, 75, P), 
& yg. (V. 1738, 181; C. 
73, 90). 
6. 3 (V. 192;.C. 92). Pernambuco. J. P. G. Smith, Esq. [P.]. 
t. Skeleton. Berbice. 
110. TROPIDODIPSAS. 
aa Giinth. Cat. Sn. p,180 (1858), and Zool. Rec. 1872, 
Gatedon, Jan, Elenco sist. Ofid. p. 95 (1868). 
Leptognathus, part., Jan, J. c. p. 100; Cope, Proc, Ac. Philad. 1868, 
pelo7. 
Tropidogeophis, F. Miill. Verh. nat. Ges. Basel, vii. 1878, p. 411. 
Tropidoclonium, part., Bocourt, Miss. Sc. Mex., Rept. p. 738 (1893). 
Maxillary short, with 12 to 16 teeth, which decrease in size in 
front and behind; posterior mandibular teeth gradually decreasing 
in size. Head distinct from neck; eye moderate or large, with 
vertically elliptic pupil; preeoculars may be absent. Body elongate, 
cylindrical or a little compressed ; scales smooth or feebly keeled, 
without pits, in 13 to 17 rows; ventrals rounded. Tail moderate ; 
subcaudals in two rows. 
Central America. 
Synoprs of the Species. 
I, Eye rather large ; loreal shield not entering the eye ; two pra- 
oculars; frontal a little longer than broad. 
Benes Ane 7 OWS, 65... smc alot nce are > 1. fasciata, p. 295. 
BUalen dn go TOWS: 5 csi) Suen <bi es rs 2. philippii, p. 295. 
II. Eye moderate. 
A. Scales feebly keeled, in 17 rows; one or two preoculars. 
Loreal at least once and two thirds as long as 
deep, entering the eye; frontal not broader 
than long; six upper labials .......... 3. fischeri, p. 296. 
Loreal short, entering the eye or separated 
from it by the preoculars; frontal a little 
broader than lone ot. np ctcsi-'si ss ss. 4. sartorii, p. 296. 
B. Seales smooth, in 15 or 13 rows; no preocular. 
Scales in 15 rows ; frontal as long as broad. 5. annulifera, p. 297. 
Scales in 13 rows; frontal longer than broad. 6. anthracops, p. 297. 
