246 On the Extinct Dogs of North America. | March, 
last, for with three premolars above and below, there is but one 
true molar above. The premolars are like those of Enhydro- 
We cyon. The flesh teeth are much mor 
developed, equaling those of the most 
specialized Canide. The family loca 
tion of this genus is indeed not as- 
sured, but the superior true molar isa 
good deal like that of the Canida, so 
far as known. The type is H. sectorius 
Cope (Fig. 13), a species the size of a 
coyote, but more robust. A second 
species, Æ. dasilatus (Fig. 13) is larger, 
and is only known from lower jaws 
These species, are from the John Day 
13.2, Enhydrocyon sten- beds of Oregon, and are the most 
sepa part of mandible from | 
art of maxillary formidable Canidze of that period, 
pesa Eo A Hyanocyon basi- though they do not appear to have 
dıble fro 
above; d, Hyenocyon sectorius, been abundant. 
Al 
s . 
three-eighths nat. size, and from E yi 
the John Day bed. Oreo. OxicoBuNis Cop 
Orig This genus has the dental formula 
of the existing neotropical genus Icticyon, but differs from it ia 
nasil 
Fic — Oligobunis penesioutins Cope, one-half natural size. i right mat Fron * 
bone “a teeth from below; 4, right mandibular ramus from debe 
John Day river of Oregon. ’ Origi 
the 
the form of the inferior sectorial tooth. In Oligobunis it es E 
primitive form seen in most of the Miocene species, ai 
cording to Flower, in Icticyon there is no internal cusp» 
i | 
