104 THE CYPEINODONTS. 



Head depressed, body compressed, depth equal length of caudal or two 

 elevenths of the total. Head as wide as deep, subquadrate in transsection, 

 one fourth of the total length, three tenths of the length without the caudal ; 

 crown broad, flat to concave in front of the orbits. Snout blunt, large, wide 

 and long, twice as long as the eye, slightly turned upward at the mouth. 

 Mouth wide. Teeth conical, slender, hooked ; outer series larger, in open 

 order ; pharyngeal groups much reduced in size, shoulders present or absent. 

 Eye rather large, twice in snout, twice in forehead ; two elevenths times in 

 head. Scales small, harsh. Intestine one and one half times the total 

 length of the fish. Dorsal originating in the middle of the total length, 

 longer in base and shorter in rays than anal. Anal origin a little farther 

 back than that of dorsal, oviduct extending a short distance on first ray. 

 Ventrals small, reaching anal. Pectorals medium, reaching bases of ventrals. 

 Caudal large, deep, subtruncate. Peritoneum black. Largest specimen 

 three and three fourths inches in length. 



Back brownish olive, belly silvery white. Flanks crossed by twelve to 

 twenty-two bands of brown separated by silvery, varying from mere streaks 

 to bands broader than the interspaces. In such cases as have wide bands 

 these may posteriorly cross the lower surface. The convolutions of the intes- 

 tine and the reduction of the pharyngeals indicate habits differing from those 

 of the majority of the genus. This is not the species to which the name 

 zebrinus was first applied. 



Kansas. 



Pundulus majalis. 



Plate II. Fig. 5-6, teeth; Plate IX. 



Mayfish Schoepff, 1788, Sclir. Ges. N. Fr., VIII, 173. 



Cobitis majalis Walb., 1792, Art. Gen. Pise, 12 ; Donnd., 1798, Beytr., Ill, 582. 



Pacilia majalis Bl. Sclm., ISOl, Syst., pp. lii, 453. 



Esoxflavulus Mtch., 1815, Tr. L. & P. Soc. N. Y., I, 439. 



Ci/primdonflavulus Val., 1828, Humb. Obs. Zool., II, 164, pi. 52, %. 3, 6, 7; Wagn., 1828, Isis, XXI, 

 1056; Guer., 1838, Icon., 29, pi. 48, fig. 3; Rich., 1837, R. 6 Brit. Assoc, 213 ; Val., 1840, R. An. lU., 

 Poiss., 229, pi. 95, fig. 5. 



Hudrargyrafiavula Stor., 1839, Mass. Pish, 95,-1846, Syn., ISO,— Mem. Am. Ac, II, 432,-1855, 

 Mem. Am. Ac, V, 294, pi. 23, fig. 5-6, — 1867, Mass. Fish, 131, pi. 23, fig. 5-6 ; Ayr., 1843, J. B. N. H. 

 S., IV, 267 ; Lius,, 1844, Am. Jour., XLVII, 68 ; Bd., 1855, Ninth Rep. S. Inst., ext. p. 30 ; GUI, 1856, 

 Rep. S. Inst., 264. 



Hydrargyraformom Stor., 1837, P. B. N. H. S., I, 76. 



Eydrargyra trifasciata Stor., 1837, J. B. N. H. S., I, 417. 



Hydrargyra venmlis Val., 1846, C. V. Poiss., XVIII, 206, pi. 531, fig. 2 ; Blkr., 1860, Cypr., 486. 



Eydrargyra majalis Val., 1846, C. V. Poiss., XVIII, 207 ; Blkr., 1860, Cypr., 486 ; Gill, 1861, N. A. 

 Fish, 52,-1865, Can. Nat, ext. p. 16,-1873, N. A. Fish, 31; Put., 1863, B. M. C Z.,p.l3; Bd.,1873, 

 R. U. S. F. C, I, 826; Yarr., 1877, P. Phil. Ac, 214; Jor. & C, 1877, B. Buf. Soc, III, 141 ; Jor., 1878, 



