10 MR. R. I. POCOCK ON THE 



marked difieiences. The spirally twisted jiortion is here and 

 there thickened and geniculate and the lamina is somewhat 

 dijfferently shaped. When the penis is contracted the spirally 

 twisted portion and the lamina are tightly folded together into a 

 thickened knot. 



The penis of Moschioln meminna was figured and described by 

 Gerhardt (Verh. Deutsch. Zool. Ges. xvi. p. 153, 1906). The 

 penis of an example I examined is in close agreement with it. 

 It ends in a long, many-coiled portion, with an acuminate tip 

 and there is no lamina (text-fig. 5, B). 



In Hyemoschus (immature example) (text-fig. 5, A) I find the 

 penis to be in general agreement with that of Moschiola, the 

 point being sharp and the lamina absent, but the spiral twists of 

 the terminal portion are not so numerous or so close, the twisting 

 resembling rather that of a " gimlet " than of a " corkscrew," to 

 which the twisting seen in Moschiola may be compared. 



The incidence of the characters above described may be epi- 

 tomised as follows : — 



1. a. Body spotted and striped with \rliite Moschiola, Hyemoschus. 



b. Body unspotted .' Tragrilus. 



c. Mandibular stripe moderately long, jugular stripe short... Moschiola. 



d. Mandibular and jugular stripes both long Hyemoschus. 



e. Mandibular stripe short or absent, jugular stripe very 



long Tragulus. 



2. a. Interramal gland absent Moschiola, Hyemoschus. 



b. Interramal gland present Tragulus. 



3. a. Tail short, scrotum and inguinal region hairj"^ Moschiola. 



b. Tail long, scrotum and inguinal region hairj^ Hyemoschus. 



c. Tail long, scrotum and inguinal region naked Tragulus. 



4. a. Legs and feet stout and strong Hyemoschus 



b. Legs and feet fine and slender Moschiola, Tragulus. 



c. Legs and feet normally covered with hair (apart from the 



hock-pad) Moschiola. 



d. Legs normallj' hairy, back of pasterns and interdigital cleft 



almost naked Hyemoschus. 



e. Legs very scantily hairy below knees and hocks behind, 



back of pasterns and interdigital cleft almost naked Tragulus. 



0. a. Penis simple, attenuated, spirally coiled distall}-, without 



lamina Hyemoschus, Moschiola. 



b. Penis comple.v, spirally coiled distally but provided with a 

 lamina normally folded up behind and beneatli the twisted 

 termination Tragulus. 



Collecting the characters under generic headings yields the 

 following diagnoses : — 



Genus Tragulus Pallas. 



Body unspotted ; mandibular white stripe short or absent, 

 jugular stripe very long ; white of throat narrow, separated from 

 that of chest and almost or entirely separated from that of inter- 

 ramal area. 



An interramal gland covered with almost naked skin extending 

 from the chin to the interramal tuft of vibrisste. 



