68 MR. R. F. TOMES ON MAMMALS FROM JAMAICA. [Feb. 2(i, 



All the specimens maintain a remarkable uniformity in colour and 

 general appearance. 



Length of the head and body, about 2 



of the head 10 



of the ears 7 



of the tragus 2^ 



Breadth of the ears above their outer notch 4 



Greatest breadth of the tragus If 



Length of fore-arm 2 2 



of first finger 1 "J 



of second finger 3 5 



of third finger 2 G 



of fourth finger 2 5^ 



of thumb and claws 3-|^ 



of tibia 8^ 



of foot and claws 5^ 



of OS calcis 10 



of tail 9 



of free end of the tail 3^ 



of the interfemoral membrane .... 1 3 



Expanse of wings, following the curve of the 



bones 14 



The above dimensions have been taken from one of the largest 

 specimens; the fore-arm of the smallest is 1^'" shorter; and as the 

 other dimensions conform pretty accurately to this reduced standard, 

 it will be unnecessary to repeat them. 



13. NOCTILIO AMERICANUS. 



One ex. from Long Hill, St. Elizabeth co. 



14. MOLOSSUS FUMARIUS, Spix. 



Molossus obscurus, Geoff. 



M. fuliginosus, Gray (not Cooper) . 



I have seen in the museums of Paris and Leyden the specimens of 

 M. obscurus of INIM. Geoffroy and Temminck, and find them to be 

 identical with the M. fulic/inosus of the British Museum, and have 

 no doubt that both are referable to the M.fumarins of Spix. All 

 the West Indian specimens which I have seen are rather smaller than 

 the South American ones, and for the most part brighter in colour, 

 but at the same time darker. 



15. Nyctinomus nasutus, Spix, sp. 



Nyctinomus brasiliensis, Geoff. 



N. tnurinus. Gray. 



Molossus fuliginosus, Cooper. 



Rhinojwma carolinensis, Le Conte (not Geoffroy). 



As in so many other species, the island specimens of this one aie 

 somewhat smaller than those from the mainland. Its geogi'aj)hical 



