40 Mamm. 
II. MAMMALIA. 
d . DeLPHINID^J 
Grampus griseus , recorded by Turner, suprd, p. 21, from the Shetlands. 
e. tZEOGLODONTIDAC. 
After describing certain remains from the Eocene of Egypt, Dames 
(Pal. Abh. [2] i, pp. 189-222) discusses the phylogeny and relation- 
ships of this family. He not only supports the view of the Recorder 
as to their Cetacean nature, but in place of regarding them as repre- 
senting a distinct suborder, would include them in the Odontoc-eti , 
according to the following arrangement : — 
Odontoceti. 
1. Arciioeoceti ; oligodont and heterodont. 
Zeuglodontidcc. 
2. Mesoceti ; polyodont and heterodont. 
Squalodontidce. 
3. Euodontoceti ; polyodont and homoeodont. 
Platanistidcu. 
Delphinulcc. 
Physeteridce. 
It is considered that the Zeuglodonts are separated from the Squalodonts 
by the resemblances presented by their skulls to those of ordinary 
terrestrial Mammals, and the small number of their teeth. They 
thus form the least specialised representatives of the Cetacea , and 
are connected with the modern toothed whales by means of the Squa- 
lodonts. He also describes certain bony plates found in association 
with the Zeuglodont remains, which are considered to have formed 
portions of a dorsal bony dermal armour in these animals. The 
existence of such an armour is in accordance with Kukentiial’s 
discovery of vestiges of such a structure in the skin of Fhoccena 
( Neomeris ) phocoenoides. 
"\Zeuglodon osiris, n. sp., Dames, op. cit. p. 201, Eocene, Egypt. 
8 . EDENTATA. 
a. Bradypodidac. 
The presence of a distinct coracoid in the adult indicated by Lydekker, 
vide supra, p. 12 ; the general anatomy described by Francaviglia, 
supra , p. 8. 
b. fMEGATHERIlDJ]. 
f Megalonyx leptostomus , n.sp., Cope, Rep. Geol. Surv. Texas, 1892, p. 49, 
Tertiary, Texas. 
