ALLEN: MAMMALS FROM THE BLUE NILE VALLEY. 349 



ScoTEiNUS scHLiEFFENi (Peters). 



Schlieffen's Bat. 



NycHcejus schlieffenii Peters, Monatsb. Kon. preuss. akad. wiss., 1859, p. 224. 



Dr. Phillips shot an adult male of this bat at Bados, on the Blue 

 Nile. It was flying about at the edge of a broad marsh just at dusk. 

 In common with Scotoecus, it has a large penial bone, 12 mm. long 

 in this specimen, clothed with very short whitish hairs directed basally. 

 Dobson mentions a specimen in which a minute first upper premolar 

 was present on one side only, and another in which this tooth was 

 found on both sides. Our specimen presents a similar anomaly in 

 possessing this extra premolar on both sides, wedged in the angle 

 between the canine and the large premolar. The wings seem rela- 

 tively short, due apparently to the short third finger which but little 

 exceeds the fourth. 



The type specimen of this bat came from Cairo, Egypt. Later 

 writers persistently misspell the specific name, by omitting an "f." 



ScoTOPHiLUS NiGRiTA LEucoGASTER (Cretzschmar). 

 White-bellied Brown Bat. 



Nycticejus leucogasier Cretzschmar, Riippell's Atlas reise in nordlichen Afrika. 

 Saugeth., 1826, p. 71, pi. 28, fig. a. 



This large species is common throughout most of the African conti- 

 nent and has been subdivided into several races. Thomas (Ann. 

 mag. nat. hist., 1904, ser. 7, 13, p. 208) states that Cretzschmar's 

 name is applicable to the Abyssinian form, though Kordofan is the 

 type locality. True nigrita of West Africa, Senegal, is larger, with 

 forearm, as measured on Schreber's plate, 57 mm. 



We obtained specimens at Magangani and at Fazogli on the Blue 

 Nile. They appear shortly after sunset while it is yet light, and are 

 .among the first bats flying. Their flight is straightforward, fairly 

 steady and not so swift as that of the Chaerephons, and they com- 

 monly are at an elevation of 30 or 40 feet. During the daytime they 

 rest in hollow trees (Cretzschmar). Most of those obtained were 

 excessively fat. The color above is an olive-brown, distinctly darker 

 on the crown and nape, where in one specimen at least, there are a few 

 minute white flecks, and the tips of the hairs are minutely white. 



