748 MR. P. L. SCLA.TER ON ANIMALS IN THE MENAGERIE. [Dec. 5, 



The complete specimen of this Podocnemis in the British Museum 

 has only one small central mental barbule. 



Fie:. 3. 



Lower surface of shell of Bartlettia pitipii, Gray. 



4. The fourth Podocnemis obtained by Mr. E. Bartlett was the 

 small species, with its brilliantly yellow-spotted head, which Prof. 

 Troschel has described as Podocnemis unifilis, and which, as already 

 stated, is labelled iu the British Museum as the young of P. dume- 

 riliana. 



Mr. Bartlett met with this Tortoise ou the Ucayali near Sarayacu, 

 and believed his specimens to be full-grown. The specimen lately 

 living in the Society's collection agrees very well with one of Mr. 

 Bartlett's specimens in the British Museum. On examining the 

 other specimens in spirits there, I find two small individuals which 

 I believe to belong to the same species. These are both labelled 

 P. expemsa. 



