398 ON THE ANATOMY OF THE RUMINANTS. 
gutturosa, rufifrons) is the same; as is that of Cephalophus (fig. 20) 
(maawelli and pygmeus), except that it is more symmetrical. In Addax 
Fig. 20. Cephalophus maxwelli. 
naso-maculatus an almost identical condition ebtains ; the glans, how- 
Page 11. ever, is nearly regular in shape and cylindroid, whilst the free filiform 
urethra, an inch in length, turns upwards round it to the left 
(fig. 18, p. 397). 
In the other Cavicornia the glans penis is different. In Nanno- 
tragus (nigricaudatus) it does not in the least resemble that of 
Cephalophus ; for it forms a slender, elongated, tapering cone, beyond 
which the urethra, which is free from it for the terminal } of an inch, 
continues straight on for } of an inch (fig. 21). Tragelaphus (scriptus) 
Fig. 21. Nannotragus nigricaudatus. 
differs but little from this, except that the free portion of the urethra 
is wanting, and the end of it slightly turned upwards; and in Damalis 
(pygarga) (fig. 22) the arrangement resembles that of Tragelaphus, 
Fig. 22. Damalis pygarga. 
except that the whole glans is shorter and thicker, at the same time 
that it is flattened from side to side. According to Dr. Murie’s 
account of the Prongbuck* (Antilocapra americana) and the Saigat 
(Saiga tartarica) the glans in these two animals differs from that in 
any of those above described, whilst from Pallas’s account of the Musk 
* “ Proceedings of the Zoological Society,” 1870, p. 352. 
+ “Proceedings of the Zoological Society,” 1870, p. 485. 
