HAPLODCNTID^— GENUS HAPLODON. 



555 



denceof an "early" or "generalized" type, in comparison with the highly com- 

 plicated teeth of many recent Rodents ; no simpler tooth than the anterior 

 upper premolar — a mere cylinder — can well be, while the other molars are 

 simply cylinders pinched into a fold on one side; being thus remotely removed 

 from such remarkably intricate and "specialized" aggregations of numerous 

 prisms as are shown by many recent Rodnnts. 



Genus HAPLODON, (Rich.). 



X Anisongx, gp., Rafinesqce, Amer. Month. Mog. )!, 1H17, 45 (genua based on a Bpocies of Cgnomyi, with a 

 epeoies of HaplodoH incladed). 



■.=Apl3donUa, Bichabdsok,* Zool. Journ, iv, 18S9, 334 (original cbaraoterization).— Rich., Fn, Uur.- 

 Am. i, 1839, 210 |,anbRtantialIy tbo same).— Audubon Sc Bachman, Quad. N. Am. iii, 1853, 

 98 (copied from Rtcbardson).— Baird, Mamm. N. Amer. 1857, 350 (elaborately recharacter- 

 ized). 



= ApUdontia, Fisciibr, &;q. Hamm. 1829, 598 (" 398 " by err. of pagination). 



z=Haplodon, Waglkb, Syat. Amphib. 1831, 23.— WAOysB, "Sappl. Sohreb. iii, 1843,395".— Fitters, 

 Monatab. Akad. Berlin, 16S4, 177 (discuaBion of afflnitiea).- AuiTON, Proo, ZoSl. Boo. 1876, 78 

 (claaaificatory). 



• ApUiodontia, Siohabi>80H, Sixth Ann. K..p. Brit. Aaaoc. Adv. Sci. for 1836, 1837, 150, 157. 



~ Baplooion, or Bapludm, Brandt, " Beit. Kennt. Siing. Bne^l. 1655, 160". 



= Saploodm, Lilusboro, Syat. Ofvera. Onag. Diigg^j. 1866, 48. 

 (Other forma of the word are donbtleaa to be fonnd.) 



Chabs. — Form stout, heavy, low ; body cylindrical ; limbs short, of pro- 

 portionate lengths before and behind ; no appreciable neck ; head broad, flat, 

 somewhat triangular, with blunt muzzle, hairy, except the margin of tlie 

 nostrils and cleft of the upper lip. Tail very short, terete, hirsute. Whisk- 

 ers very long, bristly. No cheek-pouches. Eyes diminutive. Ears of 

 moderate size, rounded above, lobate below, with antitragal fold. Fore and 

 hind feet pentadactyle, hairy on top ; palms and soles naked ; former 5-tuber- 

 culate, latter 6-tuberculate ; digits of hind feet not webbed; fore claws much 

 longer and stouter than the hinder, fitted for digging. Pelage of two kinds, — 

 long bristly bairs and woolly under fur. Progression apparehtly plantigrade. 

 Habits terrestrial, fossorial, gregarious. Regimen exclusively vcgctariun. 

 Voice shrill. 



To the structural characters already given, being those upon which a 

 family Haplodontida is established, may be added the foregoing, derived from 



* Special paper : On Aplodontia, a new genns of the order Rodentia, constituted for the reception 

 or tbo Sewellel, a burrowing animal which inliabita the north-westeru coast of America. < Op. torn. cil. 

 pp. 333-337. 



On a second described species of Haplodm, c(, Peters, Ueber nene Arteu <!<jr Siiugethiergattungen 

 Geomys, Haplodou uud Uosypus. < Monutsb. Akad. Wiaa. Berlin, 1864, pp. 177-180. 



A third special paper is : The Hnntiog Fie'da of the Paoiflo C< tst, Oregon. Capturing the ShowtL 

 By J. H, Uorpby. < " Bod and Gnu " (newa^per) of Hay 20, 1876. [Popular.] 



