EAST AFRICAN MAMMALS IN NATIONAL MUSEUM. 89 



Africa. It is apparently a rare bat, as no specimens were collected 

 by either of the large expeditions. 



MYOTIS HILDEGARDE^ Thomas. 



1904. Myotk Uldegardex Thomas, Ann. and Mag. Nat. Hist., ser. 7, vol. 13, p. 

 209. March. (Fort Hall, British East Africa; type in British Museum.) 



Specimens. — Two, as follows: 

 British East Africa: Yala River (Turner). 

 Both of these specimens have abnormal dentition. In each 'pm^ is 

 wanting on both sides, and in one skull fm^ is absent also. The meas- 

 urements of the two specimens follow, the first dimensions given are 

 of an adult male, the second of an adult female. Head and body, 

 48, 47; tail, 44, 42; foot, 9.5, 9; ear, 15; 12.3; forearm, 38.5, 38. 

 Skull: Greatest length, 15.1, 14.8; condylobasal length, 14, 13.7; 

 zygomatic breadth, 9.5, 9.3; breadth of braincase, 7.6, 7.6; inter- 

 orbital breadth, 3.7, 3.8; length of mandible, 10.7, 10.6. Teeth: 

 Upper row, front of canine to back of m?, 5.5, 5.4; lower row, front 

 of canine to back of m^, 6, 5.9. 



This interesting addition to our collection of African bats was made 

 by Mr. H. J. A. Turner, who collected the specimens November 25 

 and December 1, 1913. 



Genus PIPISTRELLUS Kaup. 

 1829. Pipistrellm Kaup, Skizz. Entw.-Gesch. Nat. Syst. Europ. Thierw., p. 98. 

 (P. pipistrellus.) 

 Five distinct species of the diminutive pipistrelles are included in 

 the collections. One of these, Pipistrellus rilppelii, has been placed 

 by Miller ^ iu the genus Scotozous Dobson. The characters separating 

 Scotozous from Pipistrellus are not well marked, and ruppelii, in a meas- 

 ure, combines features of the two genera. It seems best, therefore, to 

 retain it witliin the limits of true Pipistrellus. Of the three skulls of 

 ruppelii examined, two show distinctly a secondary posterior cusp on 

 the upper canines, and in one skull this cusp is more conspicuous than 

 is usual in several species ordinarily refen-ed to true Pip-tstrellus. 

 For measurements of specimens see table, page 91. 



PIPISTRELLUS NANUS (Peters). 

 1852. Vespertilio nanus Peters, Reise Mossambique, Saugethiere, p. 63. (In- 



hambane, Portuguese East Africa.) 

 1910. Pipistrellus nanus Thomas and Wroughton, Trans. Zool. Soc. London, 



vol. 19, p. 488. March. 

 1917. Pipistrellus nanus Allen, Bull. Amer. Mus. Nat. Hist., vol. 37, p. 441. 

 September 29. 



Specimens. — Ten, from localities as follows: 



Uganda: Mubuku Valley, East Ruwenzori, 5,000 feet, 1 (Woosnam). 



British East Africa: Yala River, 9 (Turner). 



Of his Ruwenzori specimens, one of which is Hsted above, Mr. R. B. 

 Woosnam has written: 



The^e little bats inhabited chiefly the banana plantations, and were found on 

 Ruwenzori up to 6,000 feet.^ 

 » Bull. 67, U.S. Nat. Mus., p. 206. 1907. « Tram. Zool. Soc. London, vol. 19, p. 489. March, 1910. 



