128 
Megaderma. 
Megaderma spasma Linné. 
Sumatra: Fort de Kock; skin: 1, Q (58 Mm.). 
Here again is another instance of a female with anal-mammae. In 
this specimen they are much smaller than in the foregoing example, 
but the pectoral-mammae too are much less developed. 
Vesperugo. 
Vesperugo ahramus Temminck. 
Java: Buitenzorg; skin: 227, 9 (33.5 Mm.) 288, two cTcT (35 and 
35 Mm.) and four QÇ (35, 36, 32.5 and 33 Mm.). 
Sumatra: Solok; skins: 134, cf (32.5 Mm.) and Ç (23 Mm.). 
„ Singkarah; skins: 93, Ç (30 Mm.), 2, Ç (35.5 Mm.) and 
(14.5 Mm.). 
DoBsoN observed in his Catalogue of the Chiroptera, 1878, p. 227, 
that in this species the length of the penis is extraordinary and that 
this organ is much greater in V. ahramus than in any other species 
of Bat, in proportion to the size of the animal. 
How enormously the penis is developed even in very young speci- 
mens may be illustrated by our N° 2, ^ from Singkarah. Its fore-arm 
measures 14.5 Mm. and it may therefore be called a very young 
specimen , however its penis measures at least 4.5 Mm. , that is nearly 
one third of the length of the fore-arm! In V. ahramus like in other 
small bats the female seems to be larger than the male. 
Scotophilus. 
Scotophilus temminckii Horsfield. 
Java: Buitenzorg; skins: 606, cfcT (54 and 47 Mm.). 
Vesper tilio. 
Vespertilio hasseltii Temminck. 
South-Celebes: Tempe; skin: 5, ç (41 Mm.). 
According to Dobson, Catalogue, p. 292, this species inhabits the 
Malay-peninsula, Siam, Sumatra and Java. In the collections of the 
Leyden Museum however are since half a century specimens from 
Gorontalo in Celebes, collected by the late Forsten. 
Vespertilio muricola Hodgson. 
Java: Buitenzorg; skins: 227, (34 and 33.5 Mm.) and 10 99 
(35.5, 35, 36.5, 36, 36, 35, 35, 35, 34 and 34 Mm.); 606, 
two cfcT (35 and 34 Mm.) and four 99 (35, 35.5, 35.5 and 26 Mm.). 
