1082 Bulletin 4y, United States National Museutn. 



Elheostoma xcnvellii, Woolman, American Naturalist, March, 1892, 2G1, Rio de las Conchas, 

 Chihuahua, Mexico. (Coll. the Scovell Orizaba Expedition.) 



Subgenus NIVICOLA, Jordan & Evermann. 

 1471. ETHEOSTOMA BOREALE (Jordan). 



Head 3g ; depth 5? ; eye 4 in head. D. VIII-9; A. IT, 7 ; scales 4-53-10 ; 

 lateral line with pores on 15 scales. Body moderately elongate, somewhat 

 compressed, the caudal peduncle rather long and stout, the general form 

 resembling that of Etlwostoma arteskv and E. punctulatian. Head rather 

 heavy, the snout bluntish, rather strongly decurved. Anterior profile 

 gently and somewhat evenly arched. Snout short, about half as long as 

 eye. Mouth nearly horizontal, the lower jaw included, the maxillary 

 extending about to opposite front of pupil, its length 3| in head. Teeth 

 small. Preopercle entire ; opercular spine strong. Preraaxillary not pro- 

 tractile. Gill membranes very slightly connected, A small black humeral 

 scale ; cheeks, opercles, and nuchal region scaly ; breast naked ; scales of 

 moderate size ; lateral line very short, not reaching last spine of dorsal, 

 ntnning rather high and slightly arched. Scales of belly like those of the 

 sides. Dorsal fins well separated, unusually short and small ; the longest 

 spine in the largest example (9 ?) 3i in head, in another one {^ ?) 2| in 

 head ; soft dorsal a little higher than spinous dorsal, also unusually small 

 for this genus ; caudal long, truncate, or slightly lunate, lA in head ; anal 

 low and short, its spines high, the first highest ; pectorals nearly as long 

 as head, reaching past tips of ventrals. Color in spirits: Male, dark 

 gray (perhaps red in life) somewhat mottled with darker; sides with 11 

 or 12 very distinct vertical dark cross bands (probably blue in life), each 

 alternate, one usually extending across the back, meeting its fellow of the 

 opposite side ; a dark saddle-like blotch on back between dorsal fins ; a 

 dark bar before, behind, and below eye, radiating from eye, the suborbital 

 bar most distinct ; head with dark dots ; spinous dorsal with a submedian 

 broad dark band (otherwise pale) ; soft dorsal and caudal sharply l)arred 

 with darker ; about 5 dark bars across caudal ; pectoral more faintly 

 barred ; lower fins pale, plain. Another 8pecim.en, probably a female, is 

 paler and grayer, with the cross bars narrower and less regular ; the mark- 

 ings on the fins are much paler, the first dorsal being without dark longi- 

 tudinal band. Length 2J^ inches. Montreal, Canada; only the type 

 known, {borealis, northern.) 



Poecilichthiis borealis, Jowian, Proc. IT. S. Nat. Mus., 1884, 477, Montreal, Canada. (Type, No. 



35747. Coll. T. J. Doran.) 

 Etheostoma boreale, Boulenger, Cat., i, 78. 



Subgenus RAFINESQUIELLUS, Jordan & Evermann. 



1472. ETHEOSTOMA POTTSII (Girard). 



Head 3* to 3| ; depth 3| to 4. D. IX to X-1, 10 to 12 ; A. II, 7 or 8 ; scales 

 ,5^4 to 50-10, pores 23 to 31. Length of caudal peduncle nearly equal- 

 ing head. Least depth caudal peduncle equals i head. IJody extremely 

 short and deep, the head short and heavy, moderately compressed. Upper 



