26 Christmas Island. 



a female carrj-ing a well-grown young one, but was never able to 

 obtain another specimen in this condition. Towards the end of 

 December several foetal specimens, some near the term, were 

 obtained. At this season most of the females seem to live in the 

 deeper parts of the forest, and nine out of ten of the specimens 

 killed near the settlement were males. Shortly afterwards these 

 also began to disappear, and it was not till March that they again 

 became numerous in the clearings. At this time a dead tree near 

 the east coast was seen covered with hundreds of these bats, but 

 a week or two afterw^ards they had completelj' forsaken it. 



Measurements of specimens in the present collection arc given 

 below : — 



2. Pipistrellus murrayi, sp.n. 



Muzzle obtuse, but less so than in P. ahramus; the glandular 

 prominences rather well marked. 



Ears triangular, with broadly rounded tips, relatively longer and 

 narrower than in P. ahramus ; outer border somewhat concave. 

 Tragus with parallel borders and rounded tip ; anterior border 

 straight, posterior convex. 



Feet small; wing membrane attached just below base of toes. 

 Distinct post-calcaral lobe. Last caudal vertebra (2 mm.) free. 

 Fur covers about the upper third of the humerus and half the 

 femur ; it extends very slightly on to the body membrane. On 

 the ventral surface the fur scarcely extends below anus, but sparse 

 hairs clothe the interfcmoral membrane nearly to the tip of 

 the tail. 



Colour, a dark brown with yellowish tips to the hairs, but some 

 specimens arc a distinctly reddish brown. Fur on dorsal surface 

 long and thick. In front of ear and round eye the skin is neaiiy 

 bare, and the same is the case with the tip of the muzzle. 



The outer incisor is rather longer than the outer cusp of the 

 inner, and on its postcro - external surface the cingulum bears 

 a small but distinct cusp. 



The lower incisors slightly crowded. The point of the first 

 premolar is visible through space between the canine and p.m. 2. 



This species is considerably smaller than P. abramus and the 

 common Pipistrelle, It is larger imd much darker in colour than 



