1902.] NATURAL SCIEKCES OF PHILADELPHIA. 641 



Nyctinomus bahamensis n. sp. 



Type. — Collection of the School of Biology, University of Penn- 

 sylvania. Governor's Harbor, Eleuthera, Bahamas, November 

 18, 1890. Male. Collected by Dr. J. Percy Moore. 



General Characters. — Closely allied to the (^uban form of the 

 brasiliensis group, but differing in the larger size, in the shallower 

 central eraargination of the nose-pad, and the more grayish gen- 

 eral coloration. 



Distribution. — Specimens have been examined from Eleuthera 

 and Little Abaco, Bahamas. 



Size. — Apparently intermediate between cynocephalus from the 

 mainland and the (Juban form of the brasiliensis group. The fore- 

 arm is constantly longer than that of the Cuban form, which 

 discrepancy also applie^^ to the tail. 



Head. — The nose-pad of bahaM''nsis has the upper line almost 

 straight, the central emargination being very shallow; in the 

 Cuban form the emargination is much deeper and more rotundate. 



Color. — Upper parts broccoli-brown, drab-gray below. The 

 Cuban form is Prout's brown above, below drab. 



Skull. — Exactly as in the Cuban form. 



Remarks. — This form may be readily differentiated from the 

 Cuban form by the length of the forearm, while the coloration on 

 actual comparison is fairly distmctive. 



Specimens Examined — One alcoholic specimen and six skins. 



Eleuthera. One ale (type). University of Pennsylvania. 



Litile Abaco. Six skins. British Museum. 



Comparative measurements. 



El Guamo, Cuba. Little Abaco, Bahamas. 



No. 10.{,77'i, No. 21, 



U. S. N. M. Coll. J. L. Bonhote. 

 Total length, ... 85 mm. 91 mm. 



Length of forearm, . 36 " 42 " 



T^ugih of tail, . . 29 " 36 " 



