1915.] Matthew and Granger; Lower Eocene Wasatch and Wind River Faunas. 83 
Sinopa viverrina Cope 1874. 
Prototomus viverrinus Cope 1874, Rep. Foss. Vert. New Mex., p18, TS8loy Syst. 
Cat. Vert. Hoc. New Mex., p.9; (Stypolophus) 1877, Ext. Vert. New Mex,; p, 112: pl. 
XxXxviil, figs. 1-11; (Sinopa) Marruew 1901, Bull. A. M. N. H., Vol. XLV; p.27. 
Type, U.S. Nat. Mus. No. 1022, palate and fragments of skeleton from the New 
Mexican Wasatch. 
Distinctive characters: M'!-3 = 14mm. No deuterocone on p*; deuterocone of p4 
small, submedian. | 
This species does not appear to be represented in our collections. Two 
or three fragments of lower jaws formerly thought to belong to it are now 
known to be Prolimnocyon. It is clearly distinguished from all the larger 
species by the characters of the premolars, which are suggestive of the 
smaller Limnocyonine. 
Sinopa, sp. incert. 
A number of specimens are not satisfactorily referable to any of the above 
described forms, but they are too incomplete for diagnosis of new species. 
Two lower jaws from the Sand Coulée beds are about the size of S. 
?secundaria, but do not agree very closely in other respects either with it or 
with each other. The same is true of several fragments of jaws from the 
Gray Bull horizon. | 
Geological Range of Lower Kocene Species of Sinopa and Tritemnodon. 
Clark Fork Big Horn Wind R. New Mex. 
gy 1. © Tae! een Ree mee aes 
5. & & Bae > a a > 
Q ee bo fae) Q fq) Q be F3 
= E S og . 
a a 7B 5 
ia?) 
hians | : | Kc : See . 
strenua | : skies ; % ? 
whitiae ? i 
opisthotoma * 
shoshoniensis ss - 
multicuspis aes i : 
viverrina : ? 
mordax | oont ts 
vulpecula : a ‘ 
secundaria : - 
sp. indet. . 
