04 Mamm. 
MAMMALIA. 
b EohidnidjE. 
Morton, A. Notes ou the Egg of the Echidna sctosa. P. R. Soc. Tasin. 
1887, p. 290, pi. xlv. 
Describes and figures a broken egg and the contained embryo. 
Proechidna bruijnii : skull figured by M. Weber, Bijdr. Dierk. 1888, 
pt. v, pi. i ; and an allied form described, having four in place of three 
digits ( vide supra , p. 22). 
INGERTjE SED1S. 
Tricuspiodon , n. g., V. Lemoine, C.R. cvi; p. 512, Lower Eocene, 
Rheims. 
Seeley, H. G. On Parts of the Skeleton of a Mammal from Triassic 
Rocks of Klipfontein, Fraserberg, S. Africa ( Theriodesmus 
phi[y'\larchus'). Phil. Tr. 1888, pp. 141-155, pi. xxvi. 
Fully describes and figures the pectoral limb on which this genus and 
species was founded [Zool. Rec. xxiv, Mamm. p. 36], The carpus is 
considered to have three centralia, with a conjoint scaphoid and lunar. 
The specimen is regarded as indicating a generalized Mammal, with 
affinities to several orders, but which cannot be referred to any existing 
order. It is referred to the group or subclass which Cope terms Buno- 
theria , but not to any of the described orders. It is contrasted with 
Tritylodon , which is described as a Bunotheroid Rodent ; while the 
present specimen is stated to indicate a Bunotherian with affinities to the 
Lemuroidea and Carnivora. 
