NEW SPECIES OF CHIROPTERA 17 



Length (of an adult female) bead and body 2". 25, tail 0". 95, 

 bead 0".95, ear 0".9, nose-leaf 0". 6 X 0". 4, forearm 2". 05, 

 thumb 0". 25, third finger (metacarpal I" A, 1/' phalanx 0". 03, 

 2.'"^ ph. 1".3), fourth finger (metacarp. 1".5, 1/' ph. 0".4, 

 2.°'^ ph. 0".75), fifth finger (metacarp. 1"'.52, 1.^' ph. 0".5, 

 2."' ph. 0".54), tibia 0".8, calcaneum 0'.5, foot 0".45. 



Hab. Daimbi, Shoa (N. E. Africa). Type in the collection of 

 the Genoa Civic Museum. 



I have the pleasure of connecting with this interesting spe- 

 cies the name of the late Marquis 0. Antinori by whom the 

 above-described single specimen was obtained during his last 

 expedition in N. E. Africa. 



The entire absence of the minute first upper and second lo- 

 wer premolars in this species is deserving of special notice. I 

 have observed the occasional absence of one of these premolars 

 in the allied species R. ferrum-equinum and in R. athiopSj, but, 

 in no instance, have these teeth been previously found altoge- 

 ther wanting. Their absence in a species otherwise very closely 

 allied to species in which they are always present is important 

 as bearing on the question of the taxonomic value of a pre- 

 molar more or less, and the disappearance of the second pre- 

 molar in the lower jaw before the first (which is here proved 

 to have actually taken place) adds another proof to many of 

 the untrustworthiness of Prof. Owen's method of determining 

 the homologies of teeth. 



2. PVycteris tlxetoaica,, Geoffkoy. 



The presence of specimens in the collection obtained by the 

 Marquis G. Doria at Aden extends so far east-ward the distri- 

 bution of this species hitherto believed to be limited to the 

 African Continent. 



3. "Vesperug-o ^Vespevus) doriamis, u. sp. 



About the size of V. hiUirii which it closely resembles in the 

 form of the ears and teeth but differs from in its shorter tail 



Aiin. del Mus. Civ. di St. iVaJ. Serie 2.» Vol. IL (22 Maggio 1885). 2 



