396 MR. O. THOMAS ON MAMMALS I'ROM ECUADOR. [May 4, 



15. Artibeus (Uroderma) bilobatus, Peters. 



One specimen, Sarayacu. 



There can be little doubt as to the correctness of this determina- 

 tion, although the specimen has been dried, and therefore does not 

 show the characters of the nose-leaf very well ; but the dimensions 

 agree nearly exactly with those given by Dr. Peters^ and there are 

 three molars in each jaw, as in the subgenus Uroderma. The jaws 

 are rather more elongated than is usual in Artibeus, and in this 

 respect resemble those of Fanipijrnps ; but the form and direction of 

 the upper incisors prove that it is undoubtedly an Artibeus. 



It). Felis pardalis, Linn. 



Two immature specimens, Sarayacu. 



17. Felis tigrina, Erxl. 



Two specimens, adult and young, Andoas. 



These Tigercats belong to the variety which has been till lately 

 known as F. macroura, Wied.; but Mr. Elliot- and Mr. Alston^ have 

 now decided that it is not specifically separable from the earlier- 

 known F. tigrina. 



[MusTELA PUTORius, Linn. 



One specimen, Pallatanga. 



This is of course merely a Polecat which has been used for fer- 

 retting, and has made its escape from captivity.] 



18. Galictis BARBARA, Linn. 

 Two specimens, Sarayacu. 



19. Pteronura sANDBACHii, Gray. 



One specimen, Sarayacu. 



This Otter's skin exactly agrees with Gray's type of the species, a 

 half-grown specimen from Demerara. It is a very remarkable thing 

 that this species shotild be found in Ecuador, 1.500 miles from its 

 only hitherto known habitat, on an entirely diiferent river-system ; 

 but I can find no characters by which to separate the Ecuador form. 

 The specimen is a flat skin, without skull ; but it shows clearly the 

 three external points by which Pt. sartdbachii differs from all other 

 Otters, viz. the corded margins to the tail, the extension of the 

 hair on the nose-pad to the absolute edge of the nostrils, and the 

 yellowish-white irregular blotches on the throat. Prof. Reinhardt^ 

 has stated his opinion that this species, or one closely allied to it, 

 inhabits the province ofMinas Geraes, South-east Brazil. If this be 

 the case, it would show that this Otter is very widely distributed over 

 Tropical South America, instead of being restricted to Guiana as was 

 formerly believed. 



1 MB. Ak. Berl. 1866, p. 587. ^ P. Z. S. 1877, p. 704. 



^ Biol. Ceutr. Am., Mamm. p. 01. ■* P. Z. S. 1869, p. 57. 



