496 Mr. 0. Thomas on the 



fall, but tiie specific name may be used for the Mzsh EUomySj 

 of which for the present the Tunisian and Eastern Algerian 

 form may be looked upon as a subspecies. It may, however, 

 prove to grade into the still earlier described E. munhyanus, 

 Pomel, of Morocco and Western Algeria (typical locality 

 Oran), of which both Serotinus and tunetce in that case would 

 have to rank as subspecies. 



LXXII. — On the Species of the Genus Rhinopoma. 

 By Oldfield Thomas. 



The Egyptian Pyramids are inhabited by large numbers of 

 bats of the genus Rhinopoma, the mouse-tailed bat, first 

 recorded by Belon as long ago as 1554. By Dobson, in his 

 Catalogue, the members of this genus, whether from Egypt 

 or India, were all combined under one heading, R. micro- 

 phyllum, " Geoffroy,'^ although both Peters and Ileuglin had 

 pointed out that in Egypt two forms were present, a larger 

 and a smaller, the formijr having the tail shorter than the 

 forearm, the latter longer *. 



But in giving new names the two German authors, misled 

 by their belief that Geoffroy's measurements were the original 

 ones, affixed the names to the larger form. Now, however, 

 that Anderson and de Winton's work f has drawn attention 

 to the fact that it was Briinnich, and not Geoftroy, who first 

 described the species, I am able to state, on measurements 

 kindly furnished me by Dr. Winge, that the type, still pre- 

 served in the Copenhagen Museum, is the large form with 

 short tail (forearm 67*5 millim., tail 61). The smaller one, 

 as to whose distinction from the larger no one who had com- 

 pared the skulls could doubt for one moment, will therefore 

 require a new name, and may be called 



Rhinopoma cy stops, sp. n. 



Bize comparatively small (forearm averaging about 52 

 millim., and rarely attaining 55). Nose-leaf more developed 

 than in R. microphyllum. Ears proportionally large, tiie 

 frontal band joining them particularly high. Tail very long 

 and slender, longer than the forearm. 



* Rhinopoma lepsianum, Peters, MB. Ak. Berl. 1859, p. 222 (Blue 

 Nile). 

 Rhinopoma cordofanicmn, Heugl. Reise N.O.-Afr. ii. p. 24 (1877). 

 Fitzinger also applied two names — R. senaarense and longkaudatum — 

 to m'iiTibers of this genus, but gave no descriptions. 

 t Mamui. Egypt, pp. 143 & 147 (1902). 



