19. ISCHNOSLOSSA. 605 



Specimens of thia Bat were obtained by Mr. W. Osbum in caves 

 in Jamaica, associated with other species of Bats, notably with 

 Chilonycteris parnellii and Mormojps hlainvillii. Its habits appear 

 to be similar to those of Phyllonycteris sezeJcorni (vide antea, p. 503, 

 and Mr. Osburn's notes published in P. Z. 8. 1865, pp. 69-72). 



a. ad. sk. (type). Jamaica. J. S. Redman, Esq. [P.]. 



6. ad. sk. Jamaica. Capt. Hamilton [P.]. 



c. cT ad. sk. Oxford Cave, Jamaica. ? W. Osburn, Esq. [P.]. 



d. skuU of a. 



19. ISCHNOGLOSSA. 



Ischnoglosaa, Sausswre, Rev. et Mag. Zool, xii. p. 492 (1860) ; Peters, 

 MB. Akad. Berl. 1868, p. 363. 



Muzzle and ears as in Monophyllus, nose-leaf less developed ; 

 interfemoral membrane very small ; tail none, or exceedingly short. 



n .•.- T 2—2 1—1 2—2 2—2 



Dentition, inc. —^, c. j^j, pm. -g—^, m. ^—^. 



Upper and lower incisors as in Monophyllus ; molars narrow, 

 with ill-defined W-shaped cusps. Skull with well-developed zygo- 

 matic arches. 



1. Ischuoglossa nivalis. 



Ischnoglosaa nivalis, Saussure, Rev. et Mag. Zool. xii. p. 492, pi. xx. 

 figs. 2-2 c (1860); Peters, MB. Akad. Berl. 1868, p. 363, pi. figs. 

 1-1 e (skull and teeth). 



Much larger than Monophyllus redmani, the muzzle also propor- 

 tionately longer and narrower ; the ears are similar, but the nose-leaf 

 is shorter and more obtuse. 



First phalanx of the middle finger one third the length of the 

 metacarpal bone; the metacarpal bones of the last three fingers 

 progressively shorter. 



Wings from the tibia near the ankle ; calcaneiim very short and 

 feeble ; interfemoral membrane narrow, the emargination extending 

 above the knees ; feet large, longer than the thumb ; no trace of a 

 tail externally. 



Fur, above, dark brown, at the base almost white ; beneath 

 paler. The wings and interfemoral membranes on both surfaces 

 are naked, or clothed thinly with fine, almost invisible, hairs. 



Upper and lower incisors as in M. redmani ; the first upper pre- 

 molar long and narrow, separated by a space from the canine and 

 also from the second premolar, with a central cusp and a small basal 

 cusp in front and behind ; second premolar similar, the posterior 

 basal cusp scarcely developed; molars with Ul-defined W-shaped 

 cusps, much narrower than in M. redmani, the last molar shorter 

 than the first. First lower premolar longer in antero-posterior 

 diameter than the second, but less than it in vertical extent ; 

 second premolar separated from the first and third premolars by a 

 space. 



