514 CONTRIBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 



liennicotii* Pntuam, Bull. Mtis. Comp. Zool. 186.3. 3: Ethcostoma linsleiji Storer, Proc. 

 Soc. Nat. Hist. Irtol, 37: Cato not as Jla bell a Iks Viiillaiit 1. c. 121: Catoiwtus linsltyi 

 Vuillant, Rccherches, 1873, 1*25: Etheostoma flahellare .Jordau, Man. Vert. ed. 2, 227.) 

 aaChecliSjOpercles, neck, and throat closely scaly; jaws equal; lateral line nearly com- 

 plete. 



§05. E. s<gMaBaaaceps Jordan. 



Body ratber elongate, cousiderably compressed, the caudal peduncle 

 deep. Head large ; the jaws comparatively short and equal. Lateral 

 line wanting only on a few of the posterior scales, and with occa- 

 sional tubes behind the continuous series. Spinous dorsal low and 

 short, the spines about equal, less than half the height of the second 

 dorsal ; bases of the two dorsals about equal, slightly connected by 

 membrane. Color dark, without spots, striijes or bands, in spirits; 

 male mottled, with about 6 cross-blotches ; vertical fins cross-barred ; 

 lower fins black in the male, pale in the female ; a large black humeral 

 spot. Head '6\ ; depth 5. D. lX-12 5 A. II, 7 5 scales 5-50-6. L. 2f 

 inches. Ohio Valley ; not common. 



(Jordan, Bull. U. S. Nat. Mus. x, 11, 1877.) 



266.— P<IECII.I€MTHYS Agassiz. 



Rainbow Darters. 



{Olif)oc€])lialus, Bolelchthys, Ajilesion, ,aDd Alvarius Girard: Astatichthys Vaillant: 



Hololepis Agassiz.) 



(Agassiz, Amer. Jonrn. Sci. Arts, 18o4, 304: type Pcevilichthys rariatns Agas8\z=Eiheos- 

 ioma cwrulea Storer.) 



Body variously robust or elongate, usually compressed. Head rather 

 large. Mouth moderate, nearly horizontal, terminal or nearlj- so ; vo- 

 mer with teeth; i^temaxillaries not protractile. Gill-membranes scarcely 

 connected. Scales rather large, those on the' belly similar to the others. 

 Lateral line wanting posteriorly, its tubes beginning at the orbit. Dor- 

 sal spines 6 to 11, the middle ones highest an d more than half the height 

 of the soft rays ; second dorsal larger than spinous dorsal or anal ; anal 

 with two spines, the first usually the larger. Vertebrae in P. coeruleiis, 

 15 -f 18; in P, cos, 15 + 21. Size small. Coloration usually brilliant. 

 (-ofzjAoc, variegated ; r/Ohi-, fish.) 



* The original types of Catonotns Jcennicoiti, now in poor condition, show the follow- 

 ing characters: 



Color ])lain, Avithont trace of lines or spots ; pectorals, caudal, and both dorsals 

 checkered with black. Black humeral spot large. Cheeks, opercles and breast naked. 

 Scales rather large. I^ateral line extending to below middle of second dorsal. Gill- 

 membranes' forming an angle with each other. Pectorals a little shorter than head. 

 Head 3i; depth 5^. D. VIII, 10; A. 11, 5; scales 5-40 6. From Southern Illinois. 



