SIR WM. TURNER ON THE PLACENTATION OF HALICORE DTJGONG. 651 



permit one to say whether they were more like embryonic connective tissue, or involun- 

 tary muscular fibres, though I am inclined to think the former, for the nuclei in asso- 

 ciation with them were more fusiform than rod-like. Small blood-vessels were also seen 

 to be cut across in the sections. 



I did not obtain any evidence of the presence of an umbilical vesicle. 



The amnion was a capacious sac for the lodgment of the foetus with its amniotic 

 fluid. It extended from the cephalic to the caudal pole of the chorion, and throughout 

 its entire extent, except at the ovoid area on the placenta already described, it was 

 separated from the chorion and placenta by the inner layer of the allantois and the 

 allantoic sac. Its poles, therefore, were free, and could be readily moved to and fro in 

 the allantoic cavity. Its outer surface was united to the inner layer of the allantois by 

 delicate areolar tissue, which, on being torn through, enabled the two membranes to be 

 separated from each other. Its inner surface was smooth and polished, though in places 

 blood-stained and with adherent blood-clots, due to two punctured wounds in the uterus 

 and foetus. It was particularly noticed that the amniotic covering of the cord, as well as 

 the inner surface of the sac, was free from such granular projections as have been seen by 

 various observers in considerable numbers studding the free amniotic surface in the 

 Cetacea,* and which I have named the amniotic corpuscles. 



The foetus was a male. It occupied the bag of the amnion, being curved on itself, so 

 that the tail was bent forward under the hinder part of the body, and the head was bent 

 back towards the chest. In consequence of this curvature the tail concealed the penis 

 and anus, and the abdomen was marked with deep transverse folds. The pectoral limbs 

 were directed backwards and somewhat ventralty on the sides of the trunk. There was no 

 dorsal fin. The skin was smooth, and of a dull yellowish-grey tint, lighter on the belly 

 than on the sides and back. Scattered, delicate, silky hairs from ^yths to x&ths of an 

 inch long, projected through the skin, more numerous on the head and body than on the 

 limbs and tail. The mouths of the hair follicles were very distinct, their position being made 

 more clear by the integument immediately surrounding each follicle being of a paler hue. 

 The hairs and follicles were arranged on the back of the foetus in rows having an antero- 

 posterior direction. In the intervals between these follicles a number of much finer spots 

 were interspersed. These were apparently the mouths of follicles for smaller and more 

 delicate hairs, but the hairs were not projecting from them. From the front of the 

 muzzle a moustache, consisting of short, stiff, white hairs, projected, and more delicate 

 hairs grew out of the skin of the lower lip. 



The muzzle was very characteristic. It was flattened at the front, and consisted of 

 two lateral halves, with a median portion. The lateral halves sloped downwards and 

 outwards so as to conceal laterally the lower lips and mouth slit ; but in front the mouth 

 slit was seen below the median portion of the muzzle, which was a tongue-like lobe pro- 

 jecting from the anterior end of the roof of the mouth. A mesial groove, commencing 



* I may refer to a detailed description of the amniotic corpuscles in my account of the Placentation of Orca 

 gladiator, in Trans. Roy. Soc. Edin., 1871, vol. xxvi. 



