r.o 



DESCRIPTIONS OF ETHEOSTOMOIDS. 



dusky streak occupying median line of back ; the lower pair from above 

 opercles running in a wavy course above lateral line to upper caudal 

 lobe. Below this and bounded by it, occupying the middle of the sides, 

 is a broad, dusky mouiliform band. Lower part of sides and ventral 

 region light olive, dusted sparsely with rather coarse black specks. A 

 small jet-black spot at base of caudal. A broad black bar (sometimes 

 obscure) on head, from snout through eye across upper part of cheeks 

 to opercular spine. Sometimes a series of small black cross-blotches on 

 median dorsal line. Fins translucent, barred with dark lines. 



Abundant in the Niangua Eiver and the Osage Fork of the Gasconade, 

 near Marshfield, Mo., and in the Sac liiver,uear Greenfield, Mo. Numer- 

 ous specimens were taken, and are numbered 3G215, 36308, and 38260 on 

 the register of the National Museum. 



6. Etheostoma (Hadropterus) nianguae Gilbert & Meek, sp. nov. 3'i2I4. 



Body elongate, terete, the sides somewhat compressed, becoming more 

 so posteriorly ; back elevated, the profile descending gently in an un- 

 broken line from front of dorsal to tip of snout. Head very long and 

 slender, much as in E. macrocephalum and phoxocephalum; the snout com- 

 paratively deep and narrow, abruptly rounded vertically at tip. Mouth 

 large, the cleft wide and slightly oblique, the maxillary reaching beyond 

 front of orbit, its length equaling distance from snout to front of pupil, 

 3^ in head (the latter measured in this description to end of opercular 

 spine). Outer series of premaxillary teeth somewhat enlarged ; the bands 

 all broad. Eye slightly less than snout, 5^ in head to end of opercular 

 spine; interorbital space convex transversely, its width about three- 

 fifths diameter of eye. Cheeks perfectly smooth, with a few scattered 

 embedded cycloid scales ; opercles and breast strictly naked ; nape and 

 ventral region closely scaled. Preopercular margin entire. Gill-mem- 

 branes scarcely joined across the isthmus. 



Spinous dorsal short and high, the first spine much shorter than the 

 second, the seventh and eighth about equal, the longest 2^ in head. Soft 

 dorsal high, its base 1^ in that of spinous dorsal, the longest ray 14 iu 

 head. Anal similar to second dorsal, but smaller. First anal spine 

 short, the second but little longer, its length equaling that of snout. 

 Caudal wide, truncate behind, slightly emarginate when fin is not 

 spread. Pectorals equaling distance from front of orbit to tip of oj)er- 

 cular spine, the tips of pectorals and ventrals reaching about the same 

 vertical. Ventrals 1^ or If in head. 



Scales on body of moderate size, becoming larger and less closely im- 

 bricated posteriorly ; those on nape and along base of dorsal anteriorly 

 little imbricated, roundish, without spinous points, partially embedded 

 in the skin. Ventral region uniformly scaled, without naked strip or 

 series of caducous ])lates ; no enlarged scale between bases of ventral 

 fins. Head and breast naked, excepting a few embedded scales below 

 and behind eye. 



