66 MR. R. F. TOMES ON MAMMALS FROM JAMAICA. [Feb. 26, 



12, Chilonycteris osBURNi, n. sp. (PI. XIII.) 



The present species, of which six examples are in the collection 

 obtained at Sportsman's Cave in Dec. 1858, appears to bear some 

 resemblance to the Chilonycteris gymnonota of Natterer, at least 

 so far as I can judge from the figure and description of that species 

 in the fifth volume of Wagner's Supplement to Schreber's work on 

 Mammalia. It is, however, manifestly larger than that species, and 

 differs greatly in having the back well clothed with thick fur, and in 

 having a differently-shaped tragus. Dr. Natterer's description of C. 

 (jymnonota in Wiegmann's Archiv for 1843 is as follows: — " CA . 

 fusca, (lorso nudo. Ayitibrachiiwi 1" 8^'"." This description, al- 

 though very brief, is quite sufficient to distinguish it from the other 

 known specie?, and thei'efore from the species which I am about to 

 describe. The C. ruiiyinosa of Natterer agrees with C. osburni in 

 having the back thickly hairy ; but it is larger, and differs besides 

 in several particulars, as I shall endeavour to show. 



The top of the head is considerably more elevated than that of 

 C. rubiginosa, about as much so as in C. quadridens. The muzzle 

 differs greatly from that of both these species. The end of the snout 

 is remarkably broad and flattened, the end or disk having a horse- 

 shoe shape, the middle of which may be said to represent the end of 

 the nose, and contains the nostrils ; and the two descending ends form 

 the upper lips. The nostrils are small, round, and have a slightly 

 raised margin. In the centre of the upper part of the rim of this 

 nose-disk is a notch, and from it, descending vertically between the 

 nostrils, is a slight raised ridge ; on the outside of the two nostrils 

 there are two shallow notches in the rim of the nose-disk. On the 

 top of the nose, and about a line and a half behind the nose-disk, is 

 a prominence, which in this species is of an obtusely pyramidal form, 

 rising more abruptly in front than behind, and which appears when 

 seen in front like a second but narrower snout. In C. quadridens 

 this projection is scarcely visible, and in C. rubiginosa it is simply a 

 kind of nodular swelling. 



The lower Hp is broadly reflected, its lower margin being free and 

 pendent ; the centre of its upper edge consists of a narrow horizontal 

 projection, whicli is enclosed below by a crescentic groove : and 

 beneath this all the naked part forming the reflex part of the lip is 

 covered with regular warty excrescences of a rounded form, which 

 are much larger and better defined in the middle part than on either 

 side, where they become small and indistinct. Below this part of 

 the lower lip is a transverse fold or leaf, which is much more fully 

 developed in this species than in C. rubiginosa (in which species its 

 position is indicated by a mere line or seam), but much less so than 

 in C. quadridens, in which it attains a leaf-like expansion of equal 

 prominence with the lip itself. 



The ears are shaped much like those of C. rubiginosa ; but they 

 are relatively broader at their base than in that species, and their 

 outer margin is less deeply emarginate. Their upper or narrower part 

 is relatively broader than it is in the smaller species C. quadridens ; 

 but the extreme tip is not so much rounded as in the latter species. 



