External Characters of Ruminant Artiodactyla. Ill 



the constancy of tlie characters upon which I separated 

 this species from Ovis — namely, the suppression of the 

 preorbital, inguinal, and pedal glands. 



The rhinarium (fig. 4, F, G) resembles in a general way 

 that of Ovis vignei, but the nostr Is are more dilatable and 

 the " philtru n " less well defined, hardly a trace of it 

 remaining. In one specimen the hairs of the upper lip arc 

 only separated by a very narrow parting, which is com- 

 pletely overlapped and concealed by the hairs to the right 

 and left of it. 



The naked underside of the tail (fig. 4, H) is marked on 

 each side above the anus with a wide and moderately deep 

 glandular depression, corresponding with the subcaudal gland 

 of Capra, but smaller. 



The glandular portion of the end of the penis (fig. 4, B) 

 is longer and straighter than in Ovis vignei, but the filiform 

 termination of the urethra is approximately as long as in 

 that species, and much longer than in the following genera. 

 The length of this tube and the absence of strong u Caprine " 

 smell in the male are two points in which Pseudois comes 

 neai-er Ovis than Capra. In the suppression of the specialised 

 cutaneous glands Pseudois is Caprine and not Ovine. 



Genus Ammotragus, Blyth. 



Ammotragus lervia, Pall. (p. 862). 



My notes upon this species, published in 1910, were taken 

 from" the examination of a living specimen. Several dead 

 examples that have passed through my hands since that 

 date confirm in every respect the statement then made as to 

 the absence of the preorbital, inguinal, and pedal glands. 



A peculiarity I drew attention to in 1910 — namely, the 

 smoothness of* the interdigital depression in the example 

 examined — proves to be inconstant, although the hairs of 

 this area when developed are not so long as in Ovis and 

 Pseudois. Possibly the variation is seasonal. For instance, 

 in a specimen ( $ ) that died on Nov. lltli, the interdigital 

 cleft was clothed with short hairs down to the heel-tie, as is 

 normal in the Caprine series. In a second that died on 

 March 5th. the interdigital cleft was naked. A third, 

 which died on Feb. 10th, exhibited a condition intermediate 

 between those of the other two. In the newly born young 

 the space is covered with hair. 



The rhinarium (fig. 4, M) presents no features of special 

 Ann. & Mag. N. Hist. Ser. 9. Vol. ii. 11 



