1846.] the Malayan Peninsula and Islands. 179 



diac caecum observed in the genera Vampyrus and Pteropus. The pre- 

 sent species, and Megaderma spasma, also possessing a true caecum, 

 thus present a higher organisation than has hitherto been attributed to 

 Cheiroptera. 



Length of the small Intestine, . . . . 7 •$ inches, 

 large ditto, . . . . 1 



caecum, .. .. 0- „ 



Gen. — Megaderma, Geoffroy. 

 Megaderma spasma, Geoffroy. 



Syn. — Vespertilio spasma, Schreber. 



Megaderma trifolium, Geoffroy. 



Megaderma spasma, apud Fisher. 



Megaderma spasma, apud Schinz. 

 Hab. — Pinany, Malayan Peninsula. 



Singapore, Java, Ternate. 



, • ^ . 1—1 ,, , 4.4 

 Incis.— — Camn.- — - Molar, ■ , ■ 

 4 1—1 5 . 5 



2 



Length of the head and body . . . . 3-g inches. 



,, „ ,, inter-femoral membrane, 1 inch. 

 Extent of the flying membrane, . . 14 inches. 



The five caudal vertebrae project one quarter of an inch beyond the 

 pelvis, but are completely enveloped in the inter-femoral membrane, and 

 therefore not apparent. The inguinal warts are, as in the Rhinolophi, 

 most developed in the adult female. A true caecum, though smaller 

 than in Rhinopoma Hardwickii, is present in this species. 



Length of the small Intestines, 7 inches. 



„ large ditto, 1^ inches. 



,, ,, caecum, Ojfg inches. 



Gen.— Nyctinomus, Geoffroy. 

 Nyctinomus tenuis, Horsfield. 

 Syn. — Nyctinomus tenuis, apud Fisher. 

 Molosse grele, Temminck. 

 Dysopes tenuis, Schinz. 

 Hab. — Malayan Peninsula. 



Java, Sumatra, Borneo. 



2b 



