496 CONTRIBUTIONS TO NORTH AMERICAN- ICHTHYOLOGY IV. 



cles scaly ; the cheek scales small and closely set; a triangular series 

 of scales ou temporal region ; throat smooth ; neck above closely 

 scaly; belly closely scaled. Fins large; spinous dorsal high, the 

 second still higher, but smaller than the first, its base about equal to 

 the length of the head ; dorsal fins contiguous, slightly connected. 

 Color olivaceous; head above entirely black; back with 8 dark cross- 

 bars ; about 11 bar-like blotches, somewhat indistinct, arranged along 

 the lateral line; fins chiefly black; membranes of the second dorsal 

 and ventral fins entirely black, that of the spiuous dorsal with a broad 

 black horizontal bur at base, above which are numerous distinct black 

 oblique streaks; anal with a broad black bar; caudal and pectoral fins 

 largely dusky. Females and young probably paler. Head 4J ; depth 

 l\. I). XH-10; A. II, 7; Lat. 1. (not counted). L. 2.} inches. Cum- 

 berland River; but one specimen known. 



(Arlina atripinnia Jordan, Bull. U. S. Nat. Mus. 1877, 10; Jordan, Mau. Vert. ed. 

 2,223-) 



775. 11". MiiBiotera (Cope) Jordan. 



l>0(ly short and rather deep. Head small ; the snout very obtuse, as 

 blunt as in l)ij>h'sium. Cheeks, opercles, and breast scaly. Dorsal fins 

 well separated. Back and sides each with a series of quadrate blackish- 

 green blotches; belly saftroii-color ; upper parts sprinkled with red 

 spots; first dorsal margined with orange-red; a row of oval red spots 

 across the middle of the tin ; second dorsal with the membrane chiefly 

 blood-red; a black spot on occiput and opercle; a dark stripe downward 

 and one forward from eye; caudal fin brown, barrel. Head."); depth 

 4. 1). X-ll; A. 11,7; scales 10-52-12. L. 3 inches. Headwaters of 

 the Tennessee and Cumberland rivers; an elegant and peculiar species, 

 carrying to an extreme the gobioid appearance of these fishes. 



i Hyo8tomanimot<'ritm Cope, Jonrn. Acad. Nat. Soi. 1'liila. l~ ;-,--'l">: HI/OS tomasimotervm 



Vaillanl IiVrlu-rrhrs, K'U: /HjilfxiiiiH itiniotrriim .Ionian, Man. \Vrt. c,l. "J, 



257. -DIPLESIH.II 



Agassi/..) 



RalinrM|!ir. Iclilli. Oil. l-'v! n , :!7; type Ktln-imlnmd lilnnitttiilrx Raf.) 



I'.ody elon-ate. suluerete. Head very short and blunt, with tumid 

 cheeks; t he |>rolile \ ci \ cunvex. Mouth small, inferior, horixontal. I're- 

 i',a\illaries protractile, little movable, joined to the forehead mesial ly 

 by a slight freiium ; maxillary not protractile, adnate tor most of its 

 length to the lle.shx -Ivin of the pi-eoi -bital; lower jaw very short; teeth 



