652 My. K. Andersen on the Species and 



69. Jih. eun/otis, Temm. — Batchian ; Ainboina ; Key Islands. 

 69 fl. JRh. eun/otis timidiis, K. And. — Batchian. " 

 69 b. lih. etiryotis f. ti/pwa. — Amboina. 

 69 c, lih. exiryotis prcestans, K. And. — Key Islands. 



G. Incertce sedis. 



(70) Rh. angolensis*, Seabra. — " An<^ola (Hanha)." 



(71) Rh. alcyone^, Temm. — " Gold Coast." 



A Geograpliical Bevieio of the Species, with some Notes on 

 their probable Interrelations. 



Bats, as being posse.ssed of a greater facility of locomotion 

 than other mannnals, are commonly supposed to be deceptive 

 guides for the zoogeographer. It may well be that this 

 is in part, perbtips cbiefly, due to the fact that very often 

 distinct, and sometimes widely distinct, species have been 

 covered by one technical name J. If we draw the lines 

 o£ separation between the species (and their local modifica- 

 tions) somewhat more closely in accordance with the lines 

 drawn by nature, we shall, no doubt, find that in most 

 instances bats are as good and reliable zoogeographical 

 guides as other small but non-flying mammals. Such 

 at least is the case with the bats of the genus here under 

 consideration. There is a great similarity between the 

 Rhinolophus fauna of N. Borneo and that of the Malay 

 Peninsula (see below^), but hardly greater than between the 

 mammalian faunas of these countries in general. In the 

 Plii]ip])ines, on the other hand, we find a remarkable 

 assemblage of very primitive Rhinolophi^ most of them 

 essentially different from those of the opposite continent, 



* The "lubo central do appendice nasal'' is described by Seabra as 

 " hifurcado como no Rh. Blasii " ( Jorn. Sci. Math. Phys. Nat. Lisboa, 

 (2) V. Dec. 1898, p. 250). If this means that the connecting-process is 

 high and pointed aud the sella deltoid (triangular, with pointed summit), 

 Rh. angolensts is certainly a distinct species and of much interest as a 

 ^Yest-African representative of the enqmsa type, wliich as yet, within 

 the Ethiopian Region, is known from Nyasaland and Erythrea only. 



t There is not in the original description of the only known specimen 

 of this bat (Ee'den Museum) one single word of any value for identifjdng 

 the species or determining its affinities. It is as thoroughly unknown as 

 if it had never been recorded. 



X E. g. : Rh. '' ferrum-equinum,^ made up of Rh. ferrum-equinum, augur, 

 acrotis.1 andi fumigatus, ?i^\d. therefore distributed over the whole of the 

 Ethiopian and the whole temperate part of the Palaearctic Region; 

 Rh. " (rffinis" as a collective name for Rh. borneensh, stheno, Roiixi, and 

 affinis ; Rh. " minor " for Rh. tcjiidus, monticola, refulijcns, minor, cornutus, 

 yracilis, and suhbadiutt ; kc. 



