486 DR. J. MURIE ON SAIGA TARTARICA. [June 9, 
wardly protuberant. The white fibrous septum known as the corpus 
highmorianum, is linear, rather indistinct, and occupies the mesial 
axis. Owen? remarks of the Giraffe, where the septum is similarly 
situated, that, as in the Deer and the Antelope, it thus more readily 
permits of the expansion of the tubular structures in the rutting- 
season. 
The sigmoid flexure of the penis(P. )occurs rather behind the middle 
or the organ. ‘There are two strong band-shaped retractores penis 
(R.p) fixed in front of the bend; but delicate fibres are carried beyond, 
as a membranous-looking sheath. The preputium (p) is attached 
by a freenum 2 inches behind the point of the penis. The attenuated 
glans has an inferior oblique papillar extension of the corpus spon- 
giosum (ce. s.), which terminates in a minute orifice, the meatus 
urinarius. 
Combined bulbo-cavernosus muscles (B. c.) produce a swelling 
almost as large as a chestnut. Each ischio-cavernosus (J. c.) is 
large and fleshy. The continuous thickish layer of the circular and 
oblique muscular fibres of the constrictor urethra (C.u.), 23 inches 
long, form a powerful sphincter. 
‘Two Cowper’s glands (C-. gl.), each as big as a bean, but pedicil- 
late, are situated on the rectal side of the urethra, and immediately 
behind the root of the bulb. They are yellow-coloured, moderately 
firm, and separated from each other by fatty and fibrous tissues. 
_ The vasa deferentia (v. d*.) at the upper end of the neck of the 
bladder approximate, enlarge considerably, and form a thick, smooth, 
flattened, elongate mass, which fills the superior fissure between a 
pair of large glands. These glands, as I have noticed in the ana- 
tomy of the Prongbuck, may either represent prostate, vesiculze 
seminales, or both. Considered as the homologue of a bifid pro- 
state (P.gl.), they each are 1-2 inch long, *7 inch deep, and 
together have a breadth of 0°8 in front, and 1°2 inches behind. In 
side view they are kidney-shaped, with an inferior mesial indentation. 
From above, including the enlargement of the vasa deferentia, they 
are somewhat quadrate, narrowing slightly in front. Their surface 
is smoothish, with the exception of the indentation above spoken of. 
A uipple-like process from the vasa deferentia pierces the compressor 
urethra behind ; and the combined secretion of the testes and pro- 
state enters the urethra by a double orifice ; ejaculatory ducts (e.d.) 
behind the middle of the membranous portion of the urethra. 
The kidneys agree with the characters assigned them by Pallas, 
namely, subglobularly oval, a shallow hilus, and unsymmetrically 
placed in the loins. As he observes, the right one lies near the last 
rib, whereas the left one is much nearer the ilium. Both, in the 
male Saiga, were enveloped in a large mass of suety fat. They are 
smooth-surfaced, without lobulations. The cortical substance is 
unusually thick ; and the single deepish sinus has some half dozen 
undefined pyramids and infundibula. In the male each kidney 
measured 2°8 inches long and 1°6 across. 
Pallas notes that the suprarenal bodies are oblong or oval, green- 
t Trans. Zool. Soe. vol. ii. p. 239. 
