46 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY 1. 



XXXV. Genus, LAMPREY, PBTROMYZON, Lamproie. (p. 84.) 



* 104:th species, Black Lamprey, PETROMYZON NIGRUM, Lamproie 

 noire, (p. rt4.) 



Ajuioccetes NIGER (Raf.) Jor. 

 Fetromyson niger Grd. 



Description insufficieat, but I am unable to find that the common 

 little Black Lamprey of the West has received auy other name. 



SUPPLEMENT, (p. 85.) ♦ 



+ XXXVI. Genus, SPRING-PISH, PEGBDICTIS, Pegedicte. (p. 85.) 

 Etheostoma Raf. Gill & Jordan emend. 

 Catonotus Agassiz. 



\ 105tli species, Cat's-Eye Spring-Fish, PEGEDICTIS ICTALOPS, Pegedicte 

 ceuil de chat. (p. 85.) 



Etheostoma flabellaris Raf. 

 Description iudiiiereut. The characters indicate a species of Darter, 

 and the eight dorsal spines point to the flabellaris. 



6th genus, ETHEOSTOMA. (p. 85.) 



106th species, Springs Hogfish, ETHEOSTOMA PONTINALIS, Etheostoma 

 des fontaines. (p. 86.) 



Etheostoma flabellaris Raf. 

 Description very good. 



* Eutiiely blackish, tail oval acute, secoud dorsal over the veut, several rows of 

 teeth. 



A very small species, from 4 to 5 inches long; it is found as high as Pittsburgh. Dor- 

 Hal iius shallow, and distant from each other and the tail. Eyes round and large. 

 Branchial holes small. No lateral line. Mouth oval, teeth white and yellow. It tor- 

 ments sometimes the ButJalo-fish and Sturgeons upon which it fastens itself. It is 

 never found in sufficient quantity to be used as food. 



tBody conical, with small scales, belly fiat, vent raediaL Head broad, scaleless, gill 

 covei'ed with a membranaceous appendage and a concealed spine, mouth toothed. T 

 dorsal tins, the first 'with simple, soft, semi-spinescent rays. Thoracic fins with 

 rays. 



This new genus belongs to the family Percidia and has many affinities with the G. 

 Holocentnis, Lepomis, Etheostoma, ^c, but its conical form and many other secondary 

 I)eculiarities distinguish it completely. The name means Fountain-fish. 



t Jaws equal, forehead knobby, eyes elliptical. Body olivaceous with some black trans- 

 versal niicqnal broivn hands ; a concealed spine on the gill cover ; lateral line straight; 

 tail elliptical. The first dorsal fin with 8 rays, the second uiih 12, as well as the anal 

 and pectoral fins. 



I have discovered this species in the summer of 1820 near Lexington. It has no 

 Aulgar name. Length hardly 2 inches. Head large, brown, convex above, with sev- 

 eral small knobs ou the forehead, flat beneath. Eyes as in the Calfishes with oblong 

 eves, iris gilt brown. Spine of the gill cover concealed under the skin. Teeth small 

 and acute. Pectoral fins large lanceolate. Belly white and flat. Fins hyalin with some 

 brown spots. Five transversal bands. The specific name means cat's eye. 



trill 



rwo I J 



five \\ 



