1870. ] ANATOMY OF THE PRONGBUCK. 301 
Agreeing with Antelopes, but differing from Deer, there is in the 
Prongbuck a small pyriform gall-bladder (G2), which lies upon the 
surface of the right lobe, rather to the left of its middle, but not 
reaching the upper margin. 
The cystic duct, an inch long, joins the right hepatic ; and almost 
immediately after, these turn off at a right angle, the left hepatic 
duct joining to form the ductus communis choledochus (d. ch), which 
is fully an inch song, and penetrates the duodenum at 5 inches from 
the pylorus. 
The vena cava (Vc), of moderate calibre, passes, as usual, along 
the inferior or attached margin of the liver. 
As compared with Ovis, the hepatic structures of Antilocapra 
differ in being relatively thinner and smaller, in the greater length 
of the caudate lobe (which in the Sheep does not overlap the right 
margin), in the diminished capacity of the gall-bladder, its median 
position on the right lobe, and its not reaching the free margin. 
The Chamois’s liver stands a remove further from the Prongbuck. 
In it the left lobe, and not the right, has the greatest magnitude. 
The mesial marginal fissure dividing these is wide and deep ; the gall- 
bladder is very capacious, and reaches considerably beyond the outer 
border, partialiy within the fissure ; the caudate lobe is short and 
thick. 
8. PARTS CONNECTED WITH GENERATION. 
The surface of the kidneys are smooth; their figure bean-shaped, 
but rather roundish than flattened ; length fully 23 inches. The 
hilus ends in a deep and long sinus, subdividing into fine calyces. 
The pyramids of Malphigi are rounded, and half a dozen in number ; 
the cortical substance is 0°2 inch thick. 
The ureters (w, fig. 5) penetrate the under surface of the wall of 
the urinary bladder at the commencement of the neck and outside 
the vasa deferens. 
On reaching rather beyond the middle of the base of the bladder, 
the vasa deferentia (V’.d.) enlarge, approach, and lie alongside each 
other in the median line, closely invested by a dense areolar sheath. 
They proceed, adherent, and like asingle flattened tube, on the neck 
of the bladder, towards and between the lobes of the prostate. 
The bilobed prostate gland (Pr.) lies on the under surface, and at 
the proximal end of the membranous portion of the urethra. Each 
flattish, bean-like lobe is half an inch long ; and the two, by their 
position, form a compressed horseshoe figure, fully half an inch 
wide, embracing the terminal portion of the vasa deferentia. 
I have preferred to term the bodies above described glandulze 
prostatic, though perfectly aware they have been regarded, by such 
a competent authority as Rudolph Leuckart, as vesiculze seminales 
in other ruminants. Leuckart’s very able article, ‘ Vesicula pro- 
statica,’’ in the ‘ Cyclopedia of Anatomy and Physiology,’ vol. iv., 
is immediately followed by a clearly reasoned paper by my old friend 
S. R. Pittard, on the “ Vesiculze seminales; and I abide by his 
