IIAPLODONTIDzE— SYNONYMY OF HArLODON KUFUS. 557 



we should rather write Haploulus, Haplodus, or Haploudus ; but the form of 

 <Sov?, in which the stem pdovr- is preserved, is so firmly established by 

 precedent and custom, that it would be finical to insist upon the purer 

 orthography. 



IIAPLODON RUFUS, (Raf.) Coues 

 The Sewellel. 



Sncellel,* Lewis & Clarke, Trav. 1st Am. ed. in 2 vols. 8vo, ii, 1814, 176 (1st English ed. in 1 vol. 4to, 

 1814, 470; 2d English ed. in 3 vols. 8vo, 1815, iii, 39). (Original description.)— COUE8, Bull. 

 U. S. Geol. & Geogr. Surv. Terr. 2d ser. no. 6, 1876, 437. 



Animnyx rufa, Eafinesque, Araer. Month. Mag. ii, 1817, 45 (actually based entirely upon the Sewellel of 

 Lewis and Clarke).— Desm., Manim. ii/1822, 330.— Less. Man. 1827, 240, no. 647. 



Arctomys rufa, Harlan, Fu. Amer. 1825, 308. — Is. Geoffr., "Diet. Classiquo, x, p. 186". — Griffith, 

 An. Kingu. v, 1827, 245, no. 636 (compiled). 



Aphdonlia leporina, Eiciiardson, Zool. Journ. iv, 1829, 335, no. 15. — Eiciiardson, Fn. Bor.-Arner. i, 1829, 

 211, pi. xviii C, figs. 7-14 (skull).— ScniNZ, Syn. Mamra. ii, 1840, 138 (description, &c.).— 

 Peale, Mam. & Birds U. S. Expl. Exped. 1848, 56, "pi. xv", fig. on p. 57 (skull).— Audubon 

 & Bachman, Quad. N. Amer. iii, 1853, 99, pi. exxiii (animal). (Description and account of 

 habits, mostly from Lewis and Clarke, and from Eichardson.) — Newberry. Pac. E. E. Eep. vi, 

 1857, Zoology, 58 (habits, &c.). — Baird, Mamm.N. Amer. 1857, 353, pi. xx, figs. 4 a-d (details 

 of external form), and pi. xlix, figs. 2a-e (skull and teeth). — Cooper, PaciGc E. E. Eep. 

 xii, pt. ii, 1860, 82 (habits).-SuCKLEY, Pac. E.E. Eep. xii, pt. ii, 1860, 1C0 (habits, &c.).— 

 Suckley & Gibbs, Pac. E. E. Eep. xii, pt. ii, 1860, 124 (description, habits, &c). 



Apludontia leporina, Fischer, Syn. Mamm. 1829, 598 (" 398 " by error of pagination). 



Apluodoniia leporina, Eich., Sixth Ann. Eep. Brit. Assoc, for 1836, 1837, 157. 



Haplodon leporinum, Wagner, "Zool. Jonrn. 1829, — ". 



Haplodon leporinus, Wagler, " Syst. Amphib. 1830, — =".— Wagner, " Suppl. Schreb. iii, 1843, 396 ".— 

 Giebel, Siiug. 1855, 527. 



(?) Haplodon leporinus var. californicus, Peters, Monatsb. Akad. Berlin, 17. Miirz 1864, 179 ("Gebirgen 

 Californiens "). 



Chaes. — About as large as a Muskrat. Length, a foot (more or less) ; 

 head, 3.00 inches; tail-vertebrae, 1.00; tail with hairs about half as much 

 again; fore foot, 1.75; hind foot, 2.10; longest fore claw, 0.50-0.60. Color 

 brownish, mixed with more or less black, lighter and more grayish below ; 

 basal portions of the pelage mostly plumbeous. Whiskers, claws, and upper 

 surface of foot colorless, or nearly so; incisors yellow. 



Habitat. — Washington and Oregon Territories from the Rocky Mount- 

 ains to the Pacific ; upper portions of California, and probably also southern 

 portions of British Columbia. 



A. — description of external chaeactees. 



The Sewellel approaches the Muskrat in size; and in some superficial 

 aspects is not very dissimilar to that well known animal. The general form 

 is stout and clumsy; the body is of large calibre in comparison with its 

 length ; the trunk is nearly cylindrical, broadly rounded off behind, in front 



* Sco beyond in this memoir for other forms of this Indian word, and its meaning. 



