NO. 2352. AMPHIBIANS AND REPTILES— BARBOUR AND NOBLE. 611 



related that, if distinct at all, tliey probably represent at most two 

 geographical races of the same species. 



4. LEPTODACTYLUS RUBIDO Cope. 



One adult (U.S.N.M. No. 60755) from the Comberciato River, 

 1,800 feet altitude, near the great bend of the Urubamba; another 

 (U.S.N.M. No. 60756) from Idma, near Santa Ana, October, 1915; 

 and two well-developed tadpoles (U.S.N.M. No. 60751), probably 

 referable to this species, from Nusta Ilispana, June 11, 1915, E. C. 

 Erdis, collector. 



The two adults have been compared with tlie three type specimens^ 

 and have been foimd identical with them in physical features. The 

 coloration is much darker, hoM-ever, in our specimens, but this is 

 probabl}^ due to the types being faded and the fresh specimens 

 having been preserved in formalin. 



5. GASTROTHECA BOLIVIANA (Steindachner). 



One adult female and two half-gi'own individuals (U.S.N.M. Nos. 

 60766-8) from Huarocondo, 11,000 feet altitude, April, 1915; two 

 adult males (U.S.N.M. Nos. 60753^) from Tocopoqueya in the Occo- 

 bamba Valley, July 25; and one adult male (U.S.N.M. No. 60769) 

 from Yuveni in the Cosireni VaUey at an altitude of 4,000 feet, 

 September, 1915. 



This series agrees very well with another lot (M. C. Z. 2576) from 

 Sucre, Bolivia, but all these specimens differ from the original de- 

 scription of the species in having a slight rudiment of a web and 

 in having only an indistinct glandular fold on each side of the body. 

 Gasfrotheca hoUviana is closely related to Gastrotheca femana (Bou- 

 lenger). The two species form a group by themselves very distinct 

 from all other described species of Gastrotheca. G. holiviana dif- 

 fers from G. peruana in the following characters : 



1. Vomerine teeth in two oval groups between and partly below the choanae 

 (G. 'boliviana) , instead of vomerine teeth in two short, straight transverse series 

 between the choanae (G. peruana). 



2. A glandular fold from the eye along the edges of the body (G. holiviana), 

 instead of warts of the back of unequal size, the largest of which are paratoid- 

 like and may be confluent into longitudinal folds (G. peruana). 



3. Toes without webs (but a rudiment of a web is present in our specimens 

 of G. holiviana from Bolivia), instead of toes one-third webbed (G. peruana). 



4. Tibio-tarsal articulation reaches the hinder edge of the eye, or sometimes 

 to the nostril (G. boliviana), instead of tibio-tarsal articulation reaches the 

 tympanum or the eye (G. peruana). 



G. peruana is probably the northern representative of the G. to- 

 Uviana stock. Our specimens may possibly represent an intermedi- 

 ate form. If so, they are doubtless more closely related to G. ho- 

 liviana than to G. peruana. 



lAcad. Nat. Sci., Philadelphia, Nos. 11392-4. 



