152. LEPTODIEi. 95 



Intermediate between L. 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 ; suboaudals 74-83. 



Total length 500 millim. ; tail 135. 



Central America. 



a. cj (V. 166 ; 0. 74). Chontalez, Ni- E. A. Rix, Esq." 



caragua. [p.] ; W. M. 



Crowfoot, Esq. 

 [P.]. 



{.(Types.) 



b-d. cj (V. 169; C. 76); Cartago, Costa 



hgr. (V. 164; C. ?),& Kica. | 

 yg.(V. 168; 0.83). J 



e. S (V. 161 ; 0. 79). Panama. Oapt. J. C. Dow [P.]. 



8. Leptodira albofusca. "^ 



Coluber albofuscus, Lacdp. Serp. ii. pp. 94 & 312 (1789). 



annulatus, Merr. Beitr. iii. p. 25, pis. iii. & iv. (1821). 



Dipsas annulatus, part., Schleg. Phys. Serp. ii. p. 294 (1837). 



annulata, var. B, Dum. ^ Bihr. vii. p. 1141 (1854). 



Leptodeira annulata, part., Qunth. Cat. p. 166 (1858), and Biol. 



C.-Am., Kept. p. 170 (1896). 

 Sibon annulata, part., Cope, Proc. Ac. Philad. 1860, p. 266. 

 Leptodira annulata, Cope, Proc. Ac. Philad. 1866, p. 127; Qarm. 



Bull. Essex Inst. xxiv. 1892, p. 90. 

 Sibon annulatum yucatanense. Cope, Bull. U.S. Nat. Mas. no. 32, 



1887, p. 67. 



annulatum, Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 677. 



yucatanense. Cope, I. e. 



Leptodira affinis, Qiinth. Biol. C.-Am. p. 170. 



yucatanensis, Qiinth. I. c. p. 171. 



, polysticta, Gunth. I. c. p. 172, pi. Iv. fig. A. 



Eostral twice as broad as deep, scarcely visible from above ; in- 

 ternasals shorter than the praefrontals ; 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 praeoculars, in contact with or narrowly separated from the 

 frontal, and a smaU 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. 



