1881.] Geology and Paleontology. 587 
Hesperomys loxodon Cope ; Report U. S. Expl. Surv. W. of tooth Mer., Iv, p. 300. 
Loup Fork. 
Paciculus insolitus Cope; Pal. Bull., No. 31, p. 2, 1879. Truckee. 
Paciculus lockingtonianus Cope; Bull. U. S. Geol. Surv. Terrs., 1881, p. 176. 
Truckee. 
GEOMYID 
Entoptychus planifrons Cope; Pal. Bull., No 
fE. 
» NO. 3 
Entoptychus lambdoideus Cope; Report U. S 
0, p. 3, 1878. Truckee. 
. Geol. Survey, Terrs., Iv, MS. 
Truckee. 
Entoptychus minor Cope; Report U.S. Geol. Surv. Terrs., Iv, MS. Truckee. 
. 
Entoptychus cavifrons Cope; Pal. Bull., No. 30, p. 2, 1878. Truckee. 
Ln 7 7 
urolt I é 
Pleurelicus leptophrys Cope; Report U. S. Geol. Surv. Terrs., 1vV, MS. Truckee. 
Pleurolicus diplophysus Cope; Report U. S. Geol. Surv. Terrs.,1v, MS. Truckee. 
HYSTRICOMORPHA. 
YSTRICIDZ. 
Hystrix venustus Leidy ; Ext. Mamm. Dak., Nebr., 1869, p. 343. Loup Fork. 
LAGOMORPHA. Rabbits. 
LEPORID#. 
Panolax sanctefidei Cope; Report U. S. Expl. Surv. W. of tooth Mer., Iv, p. 296. 
Loup Fork. 
Paleolagus agapetillus Cope; Pal. Bull., No. 15, p. 1, 1873. White river. 
anatase Soy haydeni Leidy; Ext. Mamm. Dak., Nebr., 18069, p. 331. Truckee and 
ite river 
Paleolagus turcidus Cope; Pal. Bull, No. 16, p. 14, 1873. White river. 
Paleolagus triplex Cope; Pal. Bull., No. 16, p. 14, 1873. White river. 
Lepus ennisianus Cope; Report U. S. Geol. Surv. Terrs., 1v, MS. Truckee. 
SUMMARY, 
Genera. Species. 
Seainr, { L 8 17 
Myomorpha syste ess aerate: aes 5 13 
Hystrico pl sees ee eee eeeeeere oe “eee 0 ® eer eee eee I I 
Lagomorpha, : i eet | 6 
Wo 8 
—F, D, Cope. 
A new Cuipastes From New Jersey.—Professor Samuel Lock- 
wood, of Rutgers College, recently discovered part of the skele- 
plays other points of resemblance to the known species of Cii- 
dastes, as the narrow articular surfaces of the lateral joint of the 
lower jaw, the slender dentary bone and the very robust agnor 
: re 
sixteen teeth and alveole on the portion preserved, and there 
Were probably two or three others on the lost portion. The 
