94 



BULLETIN 51. UNITED STATES NATIONAL MUSEUM. 



rostral portion snort ana flat, less than half the length of brain case, 

 conspicuously narrowed in front of lachrymal region. Interorbital 

 region strongly concave. Premaxillaries large, broadly rounded off 

 posteriorly, extending to upper surface of rostrum. Postorbital 

 process well developed, curved, terete, or slightly flattened. Ptery- 

 goids gradually diverging posteriorly, the hamulars nearly straight. 

 Basisphenoid pits large and deep, separated by a conspicuous me- 

 dian plate. Audital bulla; large, conspicuously emarginate on inner 



side. Mandible with notice- 

 able concavity in lower outline 

 beneath premolars. Externally 

 characterized by the short, 

 very conical muzzle, deep hol- 

 low between eyes, -long lower 

 lip terminating anteriorly in 

 two naked areas separated by 

 a groove, slender foot, and sim- 

 ple tail, the latter perforating 

 interfemoral membrane. 



Species, examined. — Taphos- 

 ous perforatus Geoffroy, T. 

 mauritianus Geoffroy, T. me- 

 lanopogo.% Temminck, T. nudi- 

 ventris Cretzschmar, T. sacco- 

 laimus Temminck. 



Remarks. — Though showing 

 no special peculiarities of ex- 

 ternal form this genus is prob- 

 ably the most aberrant of the 

 Emballonurinse. High special- 

 ization is shown in the form of 

 the rostrum and anterior por- 

 tion of the mandible, the 

 deeply grooved tibia, and the 

 high spinous process of the epitrochlea, all of which indicate affinities 

 with the Diclidurina3. 



Fig. 17. — Taphozous saccolaimus. Adult female. 

 Taeussan Bay, Sumatra. No. 141092. x 2. 



Subfamily DICLUDTTRIHSTJE:. 



186G. Dielkhirina Gbat. Ann. and Mag. Nat. Hist, 3d ser., XVII, p. 92, Feb- 

 ruary, 1866. 

 1878. Diclhlurl Dobson, Catal. Chiropt Brit. Mus., p. 355. 

 1886. Dicliduri Gill, Standard Nat. Hist, V, p. 169. 



Geographic distribution. — Tropical America. 



Characters. — Skull (fig. 18) with postorbital processes short and 

 straight, scarcely more than the projecting median angle of the very 



