1891.] Geology and Paleontology. 45 
4. Dipriodontide. 
Dipriodon robustus. 
Dipriodon lunatus. 
. Lripriodontide. Stereognathide. 
Tripriodon ccelatus, " " * * * " Meniscoéssus, Cope, 2 species. 
Tripriodon caperatus, 
Selenacodon fragilis. 
Selenacodon brevis. 
. Allodontide. 
wn 
an 
Allacodon lentus. . . . . . Probably preoccupied above. 
Allacodon pumilus. 
Camptomus amplus . « . + « « Probably preoccupied above. 
Gracoden ence. -o a ee Indefinite type,or preoccupied. 
?B. PANTOTHERIA. So oo e a T NOL Oe. 
te ee A - Determination uncertain. 
?Dryolestes tenax. 
<< Mapsupiitias.... a oa . Order indeterminable. 
Didelphops vorax. 
Didelphops ferus. P roe s Didelphops. Not definable. 
Didelphops comptus. 
Cimolestes. Not definable. 
Cimolestes curtus. 
D. INSECTIVORA. 
Cimolestes incisus. } 
} Order indeterminable. Genus 
Pediomys wie e a a not defined. 
E. Incert# SEDIS, ; 
8. Stagodontide. Reptilian or  icthyopsidan 
aroda Wit o e types. 
Platacodon nanus. 
The full analysis upon which these conclusions are based will 
be published subsequently. Hoar F Oaou. 
January 26, 1891. 
On a New Species of Palæosyops.—Paleosyops megarhi- 
nus, sp. nov.—This new species of Palæosyops is established upon a 
fine skull (No. 10,008) in the Princeton collection from the Washakie 
Eocene of Wyoming ; there is also another portion of a skull (No. 
10,041), probably belonging to this species, with the occiput well pre- 
d, from the Bridger proper. 
_ Cranium.—The characters of this skull are quite unique, and depart 
widely from any of the species of the family that I have examined. 
