23 



Arvicola {Pedomys) cinnamoma, Bd. op. cit. 541, pi. liv. (Minnesota.) 

 Arvicola (Pedomys) Jiaydeni, BcL, oj). cit. 543. (Nebraska.) 



Hab. AYestern States and adjoining Territories, esiiecially Illi- 

 nois, Missouri, and Michigan, Kansas. Louisiana. 



oa, Arvicola (Pedomys) austerus, var. curtatus, Cope. 



Syn. Arvicola curtaia. Cope, Pr. A. N. S. Phila. 1868, 2. (Owen's Valley, 

 California.) 



Hab. United States, west of the Mississippi. California. Colo- 

 rado. Kansas and Nebraska, where becoming mixed up with true 

 austerus. 



Obs. In comparing his supposed new species with "^. modesta,^^ 

 Prof. Cope was misinformed as to its affinities. It is a true 

 Pedomys. not in the least like any style of llyonomes, as I ascer- 

 tain by inspection of the type specimen. Its extreme modifica- 

 tion is peculiar in the small size, and very short tail (less than the 

 head) : it shades directly into ordinary austerus. 



Subgenus Pitymys, McMurtrie. 



Syn. Psammomys., Le C, 1829, nee Ruppel (type pinetorum). — Pifymys, 

 McMurt., 1831 (same type). — Pinemys, Less, 1831 (same type). 



6. Arvicola (Pitymys) pinetorum, Le Conte. 



Syn. Armcola pennsylvanica, Harl., Fn. Amer. 1825, 144, in part; the 

 descr. but not the synon. {not of authors). 

 Psammomys pinetorum., Le C, Ann. Lye. N. Y. iii. 1829, 132, pi. ii. 

 Pitymys pinetorum., McM., Am, ed. Cuvier, i. 1831, 434. 

 Pinemys pinetorum. Less., Nouv. Tabl. R. A. 1842, 12. 

 Arvicola pinetorum.. And. and Bach., Q. N. A. ii. 1851, 216, pi. Ixxx. 



(excl. syn. '■'• oneida DeKay.") 

 Arvicola {Pitymys) pinetorum., Bd., M. N. A. 1857, 544. 

 Arvicola scalopsoides, And. and Bach., J. A. N. S. Phila. viii. 1842, 



299 (Long Island). 

 Arvicola apella, Le C, P. A. N. S. P. vi. 1853, 405. (Pennsylvania.) 



6a. ■? Arvicola (Pitymys) pinetorum, var. quasiater, Coues, n. v. 



Diag. Subgeneric characters of Pitymys (skull not seen), and 

 somewhat resembling P. pinetorum (particularly the large dark 

 style formally called scalojosoides). Rich glossy blackish, ap- 

 pearing quite black at first sight, but this color warmed into a 

 slight auburn shade by uniform admixture of dusky chestnut or 

 chocolate brown. No markings anywliere; color of the upper parts 

 changing on tlie sides insensiblj^ into blackish-ash or dark plumbe- 

 ous of the under parts, which are slightly hoary. Tail like back 



