ElNAE LöXXBERG, 



description and figure of this organ in the Saiga is not quite clear, 

 but it seems as if the difference were not important although the free 

 prolongation of the urethra is shorter. 



The kidneys of the Black-buck are short and thick, measuring 

 55 mm. in length 35 in breadth at the hilus and about 30 in thick- 

 ness. Exteriorly they are quite smooth and undivided. The right one 

 is situated a little more forward than the left one and is attached to 

 the liver by a ligament and capped by lobus caudatus as' already has 

 been stated. A longitudinal section reveals the fact that there is only 

 one large mamilla formed by the fusion of perhaps half a dozen cones 

 on each side which, however, at their distal bases are well defined. 

 This is a resemblance with the condition found in the common sheep. 

 In the Saiga Mueie talks of »some half dozen undefined pyramids and 

 infundibular so that there seems to be a different arrangement. In 

 the Gnu as I have shown previously there is no trace of small pyramids. 



For comparison may here be appended a few notes on the 

 male genital organs of Gazella rufina 0. Thomas and Cohns defassa 

 (Rüppell). This material has been brought home by the Swedish 

 zoological Expedition to Sudan and the White Nile. Afterwards pre- 

 sented to the Zootomical Institute by Dr. Jägeeskiöld it was kindly 

 placed at my disposition by Professor Wiréx. 



The scrotal sack of Gazella rufina is pendent, constricted proxi- 

 mally, but short. It is closely covered with short whitish hair. About 

 2 1 /2 cm. in front of the scrotum a pair of teats are situated 2 1 /2 cm. 

 apart. The prseputial prominence is found about 5 cm. in front of the 

 scrotum. It is sparsely beset with short hair. The testes are elongate, 

 almost spinclleshaped. The general arrangement of the vasa deferentin 

 is similar to the same of the Black-buck as described above, except 

 that they do not lie on top of each other but side by side at their 

 distal ends. They open on a longitudinal colliculus seminalis which, 

 however, is not divided in longitudinal plicae to such an extent as in 

 the latter animal. The vesiculœ séminales are also similar to those of 

 the Black-buck, but smaller, not measuring more than about 3 cm. 

 w hen straightened. The glandidœ Gowperi are rather small, too, flat- 

 tened, roundish about 9 mm. along the greatest diameter. They open, 

 as is also the case in the Black-buck, in a little pocket, directed caudi- 

 ventrally, on the dorsal side of the urethra. The muscles are well 

 developed. The sigmoid flexure of the penis is short and situated at 

 the middle of the organ. The preputial cavity is about 5*<2 cm. in 



