152. LEPToDIRA. 95 
Intermediate between ZL. personata and L. albofusca. Agrees 
with the former in the stouter body with lower number of ventral ~ 
shields, with the latter in the length of the tail and number of 
caudal shields as well as in the coloration. Scales in 23 rows. 
Ventrals 158-169 ; subcaudals 74-83. 
Total length 500 millim.; tail 135. 
Central America. 
a. 3 (V. 166; C. 74). Chontalez, Ni- R. A. Rix, Esq.” 
caragua. 10-13 W. M. 
rowfoot, Esq. 
Py, | (Types.) 
b-d. g (V. 169; C.76); Cartago, Costa 
her. (V. 164; C. ?),& Rica. 
yg. (V. 158; C. 83). a 
e. ¢o (V. 161; C. 79). Panama, Capt. J. C. Dow [P.]}. 
8. Leptodira albofusca. 
Coluber albofuscus, Lacép. Sep. ii. pp. 94 & 312 (1789). 
annulatus, Merr. Beitr. iii. p. 25, pls. iii. & iv. (1821). 
Dipsas annulatus, part., Schleg. Biys. Serp. ii. p. 294 (1837). 
—— annulata, var. B, Dum. § Bibr. vii. p. 1141 (1854). 
Leptodeira annulata, part., Giinth. Cat. p. 166 (1858), and Biol. 
C.-Am., Rept. p. 170 (1895). 
Sibon annulata, part., Cope, Proc. Ac. Philad, 1860, p. 266. 
Leptodira annulata, Cope, Proc. Ac. Philad, 1866, p. 127; Garm. 
Bull. Essex Inst. xxiv. 1892, p. 90. 
Sibon ey ae yucatanense, Cope, Bull. U.S, Nat. Mus. no, 32, 
1887, p. 67. 
— abitletin, Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 677. 
yucatanense, Cope, 1. ¢. 
Leptodira affinis, Giinth. Biol. C-Am. p. 170. 
: yucatanensis, Giinth. 1. c. p. 171. 
—— polysticta, Giinth. l.¢. p. 172, pl. ly. fig. A. 
Rostral twice as broad as deep, scarcely visible from above; in- 
ternasals shorter than the prefrontals; frontal once and one fourth 
to once and two thirds as long as broad, as long as or a little longer 
than its distance from the end of the snout, shorter than the 
parietals ; loreal as long as deep or a little longer than deep; one or 
two preoculars, in contact with or narrowly separated from the 
frontal, and a small subocular; two (rarely three) postoculars ; 
temporals 1+2 or 3; eight upper labials, fourth and fifth (rarely 
third, fourth, and fifth) entering the eye, four to six lower labials in 
contact with the anterior chin-shields, which are as long as or a 
little shorter than the posterior. Scales in 21 or 23 rows. Ventrals 
170-211; anal divided; subcaudals 71-95. Pale brown above, 
with one or two dorsal series of brown, darker edged spots which 
may be partly confluent into a zigzag band or form cross-bands 
which do not descend to the ventrals; a lateral series of spots; 
frequently a dark median line on the occiput; a dark streak behind 
the eye; lower parts whitish, frequently with fine brown specks. 
