182 CEPHALOPHUS SILVICULTOR. 



the brownish yellow hairs have the point of each hair 

 black colored, I conclude that they attain the beautiful 

 dress by turning the dark hairs gradatim paler during 

 advance in life. 



The moon shaped grizzled field is colored in the not 

 fuUgrown specimen like in the adult one and has the 

 same »worn ofl" appearance. In the young individual I 

 fail to detect any separation between disc and triangle, 

 nay even those parts are there darker colored than the 

 rest of the body. 



To my very great surprise I see in the Book of Ante- 

 lopes (T. I, p. 126) that the » Crest is orange or rufous, 

 little developed in youth, and again wearing ofi in old 

 age". As ground for this statement 1 must accept that the 

 specimens in the British Museum are in a very bad state 

 of conservation, for the crest is spleudidly developed in 

 our fullgrown, especially in our very old specimen (more 

 than 9 years old!): it consists of a thick bundle of long 

 erected hairs, the longest about two inches, between the 

 horns and roundabout the horns, some hairs being black 

 the others red brown : it is in our specimens exactly like 

 in the type-specimen described by Afzelius in 1815, where 

 he said in pithy latin : » Vertex fasciculo pilorum instruc- 

 »tus sesquipoUicarium rigidorum^ qui partim a f route retror- 

 »sum incUnati tiigricantes, partim ah occipite prorsum directi 

 y>e rufo fusci^ inter cornu obviam Jiunt eorumque basin anti- 

 »cam obtegunf'. Evidently the here transcribed description 

 of the crest by Afzelius must have been overlooked by the 

 authors of the »Book of Antelopes", otherwise they would 

 not have written (T. I. p. 129, note): » afterwards, how- 

 sever, in 1878, struck by the great development of the 

 » rufous crest of which no mention had been previously made, 

 »Dr. Barbosa du Bocage distinguished it as C. ruficrista'\ 

 They have been induced in error by the old specimens in 

 the British Museum, where »</«« rufous crests have been 

 »worn off and but little trace of them is lefi'^ (cf. above 

 mentioned »note"). 



Notes from the Leyden IMuseiim , "Vol. XXII. 



