82 MxVMMALIA. 



Buff. VIII, XVII, 2 and 20 ; Geoff, loc. cit., both of which in- 

 habit quarries solitarily, and suspended by their feet, envelop- 

 ing themselves with their wings so that no part of the body is 

 visible.(l) 



Nycteris, Cuv. and Geoff. 



The forehead furrowed by a longitudinal groove, which is even 

 marked upon the cranium, bordered by a fold of the skin which par- 

 tially covers it ; nostrils simple j four incisors without intervals 

 above and six below ; ears large and separated ; tail involved in the 

 interfemoral membrane. They are African species. Daubenton 

 has described one by the name of the Campagnol volant, Buff. X, 

 pi. XX, fig. I and 2, the V. hispidus, Lin., Schreb. LVI. M. Geoff- 

 roy has found others in Egypt. (2) 



Rhinopoma, Geoff. 



The pit on the forehead less strongly marked ; nostrils at the end 

 of the muzzle with a little leaf above, somewhat resembling a cur- 

 rier's knife ; ears united ; tail extending far beyond the membrane. 

 One is known in Egypt, where it is principally found in the pyra- 

 mids.(3) 



Taphozous, Geoff. 



A small round pit on the nose ; no recurved leaf to the nostrils ; 

 head pyramidal ; only two incisors above, and very often none; four 

 trilobate incisors below; ears wide apart, and the tail free above the 

 membrane. The males have a transverse cavity under the throat. 

 A little prolongation of the membrane of the wings forms a sort of 

 sac near the carpus. (4) One species was discovered in the cata- 

 combs of Egypt by M. Geoffroy.(5) 



(1) Add the other four species fig-urcd, Geoff. Ann. Mus. XX, pi. 5, of which 

 one is the Vesp. spcoris, Schi-eb. LIX, 13. and Peron, Voy. aus Terres, Aust. pi. o5. 



(2) Nydere de la Thebaide, 29, Mammif. 1, 2, 2 ; and Ann. Mus. XX, pi. l.~N. 

 de Java, Geoff. Ann. Mus. XX, pi. 1. 



(3) JRhinopome jnicropkylk, GeoW. ; Vesper, microphyllus, Schr. 



(4) It was this that caused Illiger to name the genus which contained the Ta- 

 phiens Saccopterix. 



(5) The TapUen filet. Eg. Mammif. I, 1, 1. The TapMen perform, lb. IU,z, which 

 does not appear to differ from the Lcrot volant. Daub.; T. senegalensis, G. Add the 

 Vesp. kpiurus, Gm., Schr. LVir. The T. of India; V. brachmanus, G. The T. 

 oft/ie Isle of France , T. mauriiiunus, G. The T. riifits, Wils. Amer. Ornith. vol. 

 VI, pi. 50, No. 4. The T. longimanus, Hardw. Lin. Trans, vol. and pi. XVll. 



