and its closest Allies. 279 



Como River westwards, llinmj^li tlic comitrics hrjiderinj; tlic 

 (iulf of (luiiica (incliiiliii;;; the islaiul oi" rciiiaiido Po), at 

 least as far as Liberia. 



1 d. H'tpposiderus coffer aiiyolensis. Scabra. 



In eranial and dental cliaracters and in eolonr intermediate 

 between //. c. ii/pictis and //. c. centrulis ; in external 

 dimensions next tu this latter. 



Prof, liarboza du lioeage, who fiist drew attention to 

 this form (/. s. c), emphasized two distinetive characters: 

 the slightly broader horseshoe and tiie eoalcseenee of the 

 rijiht and left suijplementary leaflets in front of the horse- 

 shoe. Neither of these points holds jjood. The horseshoe is 

 not broader than in many individnals of H. c. t; picus imd 

 centralis; as to the lateral leaflets. 1 find th'Mn meeting in 

 front in two H. c anyolettsis (one of them is a cotype of 

 Ph. angolensis) , separated, sometimes broadly separated, in 

 all the others ; on the other hand, in one H. c. typicus 

 (Kilimanjaro) and two //. c. centralis (Stanley Falls) they 

 are almost or qnite connected in Iront of the horseshoe. Tlie 

 only claim of H. c. angolensis to liave a technical name of 

 its own is therefore that it is neither the typical form nor 

 H. c. centralis, bnt intermediate between these races, and 

 has a separate geographical distribution. 



12 sijccimens (7 skulls) have been examined, fi'om various 

 places in Angola. I have reason to believe that this form 

 extends nortli wards beyond the limits of Angola into the 

 coast-region, w here the predominant forms are H. c. centralis 

 and yuineensis. 



2. llij/posidcrns beat us-, sp. n. 



Smaller than //. coffer, with very short tail and tibia. 

 Skull small and very broad-jawed. 



In all forms of //. cnjj'er the maxillary width (across tlie 

 antero-external corners of ;w^) is practically equal to the 

 length of the maxillary tooth scries ; in H. beatns the former 

 is markedly greater than the latter (7 mm. as against Ti\)-Q2) ; 

 the great maxillary width, combined with the small size of 

 the skull, makes the cranium of H. beatus easily distin- 

 guishable from that of any race of H. cnffh'. The zygomatic 

 width is larger than the mastoid width, as in H. c. centralis 

 and guineensis. 



The teeth arc of the same size as in the small-toothed 

 H. c. typicus. The dentition, although in all essential respects 



