ON THE ANATOMY OF THE NORTHERN BELUGA. : 407 
Delphinus orca— Sperm Whale— 
8 to 1, Reinhardt. 16} to 1, Jackson. 
* Delphinus delphis— a 
6 to 1, Jackson. et crete 
o 1, Murie. 
Globiocephalus melas— 
9 to 1, Murie. Ziphirrhynchus eryptodon— 
8 to 1, Jackson. 5 to 1, Burmeister. 
*61 to 1, Gulliver. 
Phocena communis— 
11°4 to 1, Cuvier. 
14 to 1, Jackson. 
Globiocephalus (Chinese species)— 
7 to 1, Williams. 
Beluga catodon— 
6 to 1, Wyman. Balenoptera rostrata— 
64 to 1, Barclay. 54 to 1, Perrin. 
64 to 1, W. and Y. 52 to 1, Carte and Macalister. 
The table, moreover, shows that in the majority of the toothed whales the 
intestine relatively to the body is considerably longer than in the whalebone 
whales, only a single species of the former (Zyphiorrhynchus) possessing a rela- 
_ tively shorter alimentary canal than any member of the latter group. 
So far as Beluga is concerned, it appears to occupy an intermediate position 
between the two. 
In respect of the duodenal dilatation, Beluga agrees with nearly all the 
cetacea; and with the other toothed whales, in the absence of a cecum or any 
distinction between the small and large intestines. Peyerian patches similar to 
those described in Beluga have been noticed in Globiocephalus melas,t Grampus 
Rissoanus,{ Balenoptera rostrata,§ Delphinus delphis,|| and Phoceena communis.| 
In all probability more extended investigation will affirm their presence in all 
the species of cetacea. The mesenteric lymphatic glands of Beluga agree with 
those of Globiocephalus in the absence of any cavity in their interior resembling 
that described by ABERNETHY’ in Baleena. 
Liver.—This viscus is of large size and extends from the cesophagus on the 
left to the curve of the fifth gastric compartment on the right. It measures 
16 inches from right to left and 8 inches in greatest breadth from its attached 
to its free margin. The attached margin is thick and rounded, whilst the free 
border is thin and sharp. The anterior surface is closely attached to the 
diaphragm, whilst the posterior is in contact with the second and fifth gastric 
cavities. It presents no trace of subdivision into a right and left lobe. The 
organ is enclosed in a strong fibrous capsule, from the deeper aspect of which 
* This specimen was foetal. ie ep. 200: Lexi p. 133: 
§ I. p. 249. || IV. pp. 157 and 169. q XIII p. 675. 
