452 Mr. K. Andersen on African Rliinoloplii. 



Besults. — Rh. fumigatiis and Wi. macroceplialus are based 

 npon individuals of the same species : the types of both agree 

 exactly with each other to the smallest details ; but they are 

 certainly toto coslo different ivom. Rh. ferrum-equinum. They 

 are the same species as, later on, described by Dobson * under 

 the name Rh. Antinorii. From Rh. ferrum-equinum they 

 differ principally in the following points : — (1) The horse- 

 shoe is very much broader, covering almost the whole of the 

 muzzle, and differently formed ; (2) the sella is much 

 broader, only very slightly (scarcely perceptibly) constricted 

 below the middle, its lateral margins subparallel (in Rh. 

 ferrum-equinum the sella is strongly pandurate) ; (3) the 

 front face and the lateral margins of the sella are densely 

 covered with long straight hairs, one of the most striking 

 peculiarities of " Rh. Antinorii " and its nearest allies, the 

 large Rh. Hildebrandti and the West-African Rh. athiops (in 

 Rh. ferrum-equinum the front face of the sella is perfectly 

 devoid of hairs) ; (4) the ears are very much broader, 

 scarcely attenuated below the tip, the tip itself blunt ; 



(5) there are important differences in the proportionate 

 length of the forearm, metacarpals, and phalanges as com- 

 pared with the corresponding bones of Rh. ferrum-equinum -, 



(6) the tail (which is complete in all the specimens examined) 

 is extremely short, 21-26*8 mm., in Rh. ferrum-equinum (31 

 specimens from Europe) 34-40 mm. ; (7) one of Riippell's 

 cotypes is mounted with the mouth sufficiently open as to 

 give a view of the anterior portion of the tooth-rows : the 

 upper canine and ^* are so closely approximated, their cingula 

 being in immediate connexion with each other, and the 

 distance between their tips exactly the same as in " Rh. An- 

 tinorii" that it may safely be said that there is no rudi- 

 mentary upper p"^ ; when, however, the upper jy^ is wanting, 

 the same is the case with the lower p^, this latter being 

 invariably lost before the upper />^. As to the types of Rh. 

 macrocepjhalus, the one specimen is adult, with no trace of 

 the lower p^ nor of the upper p"^ ; the second specimen is a 

 young individual without the lower p^, but having on both 

 sides of the upper jaw a p' so exceedingly minute as only to 

 be perceptible under a strong lens, and situated not only 

 exterior to the tooth-row, but quite on the outer side of the 

 maxillary bone, above the adjacent teeth, thus proving (what, 

 indeed, might have been expected) that the tooth which is 

 constantly wanting in adult individuals of this species may 



* Dobson, Aun. Mus. Civ. Genova, (2-'') ii. (1885) pp. 16-17. 



