30 DR. J. MURIE ON THE MANATEE. 
I carefully searched for, but failed to find traces of, more than three nails, the usual 
number recorded ; these were, in this case, clearly defined and well formed. 
What has been said of the outline of the dorsal region applies equally to the 
abdominal surface, viz. the caudal contour, foot-shape, and muzzle constituting the 
main differences between the young male and this adult female. The transverse con- 
striction at the root of the tail and the other less marked furrows of the body were 
present in this female, though each and all were by no means so pronounced as shown 
(/.c. pl. xvii.) in the copy from the photograph of the young male’s body. In this 
Aquarium example, from the great loss of flesh and contraction of the parts, the 
abdominal walls were pinched in even below the level of the ribs. The recti abdominis 
muscles stood out prominently, each fully 2} inches broad. ‘There was a deep median 
furrow extending from the vagina forwards to within a few inches of the limbs; the 
indent, shallowing to a narrow line in front, was deepest posteriorly, and behind the 
vulva it bifurcated slightly. Round the anus traces of linear grooving were slight. I 
have, in Pl. VII. fig. 4, reproduced an old drawing lying by me of the perineal region 
of the first female dissected by me; it agrees well with this Westminster Aquarium 
specimen, and may be of use for comparison with the same region in the male (J. ¢. 
pl. xvii. fig. 2.). 
In my former Memoir on Manatus I referred to Sir Everard Home’s figure!, copied 
by Frédéric Cuvier? and others, wherein a prominent teat is represented, whereas in 
the animals formerly examined by me the female showed only a very rudimentary 
trace of nipples and no subjacent gland. The examination of the present adult female, 
however, has enabled me to substantiate Sir E. Home’s observations; only in a side 
view of the body the teats would not be so conspicuously visible as he has represented 
the left one, especially as his was a young animal. In this Aquarium specimen the 
teat in each axilla was on a line with the elbow (PI. VII. fig. 3), and fully an inch long 
and about as much broad. A small but easily distinguishable central orifice existed 
among the surrounding punctated skin, which latter is glandular in appearance. The 
mammary gland itself was readily traced, and in the position and with the relations of 
parts I have already described’. 
Regarding the head, as I have already hinted, the outline of the skull in its upper 
contour was more visible, and there appeared to be a greater proportional breadth 
between the eyes and a less transverse expansion of snout, than in the carcasses 
formerly examined; but in this and other points the unusual laxity of the tissues 
must be taken into account for variations. In certain aspects the profile, and even 
the fore-shortened view, of muzzle resembled a young Hippopatamus or Walrus, minus 
stout bristles of latter (Pl. VI. fig. 7). At times, however, when alive, the animal 
would raise and shorten its muzzle so as to have an uncommonly pig-like expression 
* Phil. Trans. 1826, pl. 26 &e.; Lectures on Comparative Anatomy, vol. iy. pl. 55. 
* De V'Histoire Nat. des Cétacés (1835), pl. i. * Trans. Zool. Soe. vol. viii. p. 189. 
