324 THE AMERICAN NATURALIST. [VOL XXXII. 
expanded supra-iliac border. There is some evidence of the 
existence of marsupial bones, as in the monotremes and 
marsupials (of. cz¢., p. 117). The femur, so far as preserved, 
is less mammalian in type; the trochanter minor is very promi- 
nent and extends far down the shaft. 
All the above characters are observed in the single skeleton 
of C.crateronotus. In skulls of C. berryi are found two condyles 
formed from exoccipitals only (of. cit., p. 129), separate pre- and 
postfrontals, greater coalescence of the jaw elements, an inferior 
dental formula estimated at: 
I, 3.-C, 1.—P, 4.-M, 5. 
Another species, C. platyceps, an animal about the size of a 
wolf, lacks the supposed infratemporal opening (Fig. 10) above 
the malar arch. The quadrate is hardly distinguishable from 
the squamosal. The lower jaw exhibits evidence of a splenial 
(op. cit., p. 140) in process of degeneration. A third species, 
Fic. 10o. — Lateral view of skull of Cynognathus platyceps, 2p eae union of the prosqua- 
mosal and malar elements, closing in the infratemporal Angle developed as in 
Microconodon. (After Seeley.) 
probably generically distinct, is C. leptorhinus, with a median 
nasofrontal pit upon top of the face and two specialized 
canines. 
A carpus doubtfully referred to Cynognathus (1895, 5» 
p. 145) exhibits elements which Seeley interprets as a united 
scapholunar, cuneiform, pisiform, and portions of the centrale. 
