Cope.] ^40 [Xov. 17, 



Measurements. t/as.. 



Length of posterior limb 65 



Length of posterior foot 31 



Length of tarsus 12 



From Buenos Ayres ; No. 365. 



This species is allied to the L. labialis Cope and the L. lonf/irestris 

 Blgr. ; the former Mexican, the latter Brazilian. In the latter the denti- 

 tion and form of head are similar ; but the front is narrower than the eye- 

 lid, the hind legs are longer (the heel reaching the end of the muzzle), 

 and there are but two dorsal glandular folds. The length of the limbs is 

 as in L. labialis, but the series of vomerine teeth are further extended out- 

 wards, the muzzle is longer ; and the glandular tubercles of the groin of the 

 L. labialis are wanting. The original description of the latter species was 

 taken from young individuals, and includes the statement that the spe- 

 cies has no discoidal abdominal fold. This is a mistake ; the fold is pres- 

 ent. 



Atelopus varius Stannius. 



Nos. 296-298, Palmar. 

 Dendrobates tinctorius Wagl., subsp. auratus Gird. 



Nos. 290, 369. 370, 371, from Palmar. No. 339 from Talamanca is sim- 

 ilar, but the pale cross-bands both above and below are much wider, 

 much reducing the area of the black ground color. 



Subspecies vittatus, nova. In this color form the ground is black 

 everywhere, and the only marks are a pale stripe on each side, which 

 passes from above the groin above the extremities of the diapophyses of 

 the vertebrse, on the upper eyelids, and joins its mate on the end of the 

 muzzle. This form has the lateral stripes of the D. talamancce, but resem- 

 bles it in no other respect. The second finger equals or is longer than the 

 first. In D. talamancm it is shorter. Nos. 367, 368, from Buenos Ayres. 



REPTILIA. 

 Lacertilia. 



MOCOA CHERRIEI, Sp. nOV. 



This species resembles the M. assata, but differs conspicuously in these 

 respects : First, the limbs are relatively considerably more elongate, for 

 when appressed to the side they overlap by the length of the anterior foot. 

 In the M. assata they fail to meet by the length of the fore leg. Second, 

 the scales are more numerous, being in thirty four rows ; and those on the 

 sides are smaller than those on the back and belly. In 31. assata the 

 number of rows does not exceed thirty, and the scales are of equal sizes. 

 Thirdly, the coloration is different. The ground is blackish olive, and 

 there is a black dorsolateral band which has a not very distinct pale dor- 

 sal border. A faint pale median dorsal band is bordered on each side by 

 a narrow black line. There are small pale dots on various scales, which 



