64« 



MILLER 



Fig. 43 

 b P. minusculns X 2 



a Pipistrellus pipistrellus ; 



the wings and uropatagium with a very narrow pale border along free 

 edge. 



Skull. — The skull of Pipistrellus juimisculus (fig. 43b) , which I am 

 unable to compare with that of P. stampjiii., is considerably smaller 

 than that of the European P. pipistrelhis (fig. 43^). The reduction in 



size is chiefly due to 

 shortening of the ros- 

 trum and flattening of 

 the braincase,but, aside 

 from the general differ- 

 ence In size and form, 

 there are no very strik- 

 ing characters to dis- 

 tinguish the skull of 

 the African animal. 

 The premaxillaries in 

 P. 7)iinusculus are 

 more abruptly bent 

 downward than in P. 

 pipistrellus^ the anterior nares thus appearing to open more dis- 

 tinctly forward and less upward. Interpterygoid space slightly 

 broader t/ian long. Audital bullcE relatively smaller than in P. 

 pipistrelhis and space between them actually as well as relatively 

 greater. 



Teeth. — The teeth are essentially as in P. pipistrellus., though much 

 smaller. Crown of middle upper, molar narrower and with more 

 narrowly conical protocone. Hypocone of first and second molars 

 minute but distinct. The mandibular teeth present no peculiarities. 



Measuremc7its. — External measurements of type: total length 70 ; 

 tail vertebrai 31 ; tibia 9.4 ; foot 5.4; calcar 9 ; forearm 26.6; thumb 

 4.8; second digit 23 ; third digit 45 ; fourth digit 40 ; fifth digit 35; 

 ear from meatus 8 ; ear from crown 7 ; width of ear 7 ; tragus 4.4. 

 Cranial measurements of type: greatest length 11 ; basal length 10; 

 basilar length 8; median palatal length 4.6 ; lachrymal breadth 4.8; 

 least interorbital breadth 3.2; zygomatic breadth 7; mastoid breadth 

 6.2; occipital depth 3.6; upper toothrow (exclusive of incisors) 4; 

 mandible 7.4; mandibular toothrow (exclusive of incisors) 4. 

 Specimens examined. — Three, all from the type locality. 

 Re?narl-s. — I should hesitate to separate this species from Pipistrel- 

 lus stampjliihaiX not Dr. Jentink made comparison of one of the Mount 

 Coffee specimens with the type of the latter. After pointing out an 



