neio Bat from Selangore. 361 



Malay Peninsula. Among the specimens so obtained may- 

 be specially mentioned examples of the rare Gynopterus 

 Lucasi, Dobs., only hitherto recorded from Borneo, but of 

 which Mr. Ridley has sent several specimens from Singapore 

 Island. In the most recent consignment, obtained during an 

 expedition to explore the caves of Selangore, besides specimens 

 of Rhinolophus affinis and minor ^ there occur two examples of 

 a Pipistrelle which appears to be new, and which may be 

 called 



Ptpistrellus Ridleyi, sp. n. 



Size about as in P. ahramus, although the forearm is 

 markedly shorter. Ears of medium length, narrow, their 

 inner margin evenly but slightly convex, except just below 

 the tip, where there is a slight concavity ; tip narrowly 

 rounded off; outer margin faintly concave above, convex 

 below. Tragus fairly long, reaching its greatest breadth 

 rather below the centre of its inner margin ; inner margin 

 straight or faintly concave, tip sharply pointed, outer margin 

 evenly convex, with a distinct rounded basal lobule. Wings 

 attached to the metatarsus, near the base of the toes. No 

 adhesive disks on wrists or soles ; hind feet large and clumsy ; 

 calcars long, reaching two thirds of the distance towards the 

 tip of the tail; no postcalcareal lobules. 



Fur almost restricted to the trunk, the arms, wings, and 

 legs naked, but the toes well covered with hairs. Colour 

 smoky brown above and below. 



Skull, as compared with that of P. ahramus, rather nar- 

 rower, less flattened above, and with a narrower and more 

 elongated muzzle. Bullse smaller. Lower jaw not so thick- 

 ened anteriorly. 



Incisors quite different from those of other species ; the 

 inner one extremely short, scarcely longer than broad, its 

 main cusp directed rather inwards than forwards, and not 

 hiding the well-marked though low accessory cusp ; outer 

 incisor about equal in length to the main cusp of the inner 

 incisor, and with a small accessory inner cusp, not visible 

 from the outer side. Canines rather short, without accessory 

 basal processes behind. Anterior premolar well-developed, 

 standing in the tooth-row, and wholly visible from the side, 

 owing to the unusual distance which separates the posterior 

 premolar from the canine. Lower incisors in the direction of 

 the jaw, the third longer (horizontally) and markedly thicker 

 than the other two ; lower canine very short and conical ; 

 anterior premolar not crowded out of the tooth-row, much 

 shorter than in P. abramus. 



