Species of the Genus 'RKmo^^om^. -497 



Skull small, narrow and delicate (greatest length 16-17 

 niillira., as compared with 19-20 in R. microphi/Uum) ; 

 muzzle with two inflated projections, one on each side of and 

 above the nasal opening, with a longitudinal groove between 

 them. In R. microphyllum this region is almost flat, and its 

 angles, although thickened, are not conspicuously inflated. 

 {Sagittal crest but little developed, not connected anteriorly 

 with the nasal projections. 



Dimensions of the type (an adult female, measured in 

 spirit before skinning) : — 



Forearm 53 millim. 



Head and body 53; tail 59 ; hind foot (s. u.) U'S; ear 17. 



Skull: greatest length 16'7 ; basal length 11; occipito- 

 nasal length 14-5 ; zygomatic breadth 10 ; breadth of brain- 

 case 7' 2 ; front of canine to back of m^ d'Q, 



Hah. (of type). Luxor, Lower Egypt. Other specimens 

 from many Egyptian localities^ southwards to Gebel Auli, 

 Soudan {H. F. Witherhy). Examples from Palestine ( Tris- 

 tram), Midian (Burton), and Aden [Percival & Dodson) are 

 also assignable to R. cystops. 



Type. Adult female. B.M. no. 2. 1. 17. 2. Collected 

 and presented by the Hon. N. Charles Rothschild. 



Not only, however, are these tw^o Egyptian species distinct 

 from each other, but the members of the genus elsewhere 

 appear to fall into two groups corresponding to them both in 

 external proportions and in tiie characters of the skull. 



To the first or microphyllum group, besides the type species, 

 whose range extends from Egypt and Palestine {Tristram) 

 to Persia [Witherhy), there belongs the large form described 

 below as R. sumatrce. 



To the second, besides cystops itself, the species recognizable 

 are Hardioichei from India and muscatellum from Muscat. 



Apart from the differences in size and length of tail that 

 separate the two groups, the species are very like each other 

 externally ; but the skull-characters are in all cases most 

 obvious, and leave no room for doubt as to the distinctness of 

 the various forms. 



Rhinopoma sumatrce, sp. n. 



A large species allied to R. microphyllum. 



Size very large, the largest of the genus. General colour 

 dull brown, little lighter below. Nose-leaf and ears short, 

 the connecting band between the latter comparatively low. 

 Tail shorter than forearm. 



Skull large and heavy, considerably larger than those of 

 Ann, d; }[ag. X. Hist. Ser. 7. Vol. xi. 35 



