492 CONTRIBUTIONS TO NOETH AMERICAN ICHTHYOLOGY IV. 



a. Dorsal spines normally 9. 



h. Checks scaly; second dorsal with 13 or 14 rays. 



765. E5. oBBMSledi (Storer) Agassiz. 



Body slender, little compressed, with long caudal peduncle. Head 

 slender, rather pointed. Cheeks and opercles scaly 5 space before dor- 

 sal naked; breast naked. Fins very high, pectorals reaching past tips 

 of ventrals. Coloration olivaceous, tessellated above; sides with 

 blotches and zigzag markings ; fins speckled or somewhat barred ; 

 head not speckled, dusky in males; usually a black stripe forward from 

 the eye and another downward. Head 4; depth 5 J. D. IX-14; A. I, 

 9; Lat. 1. 50. L. 3J inches. Great Lakes to Georgia and Massachu- 

 setts; the commonest eastern species. A southern form, var. macula- 

 ticeps, has the cheeks scaly above ouly, and is more speckled; var. atro- 

 maculafum, found eastward, has the breast closely scaled. 



(Etheosfoma olmstcdi Storer, Bost. Joiirn. Nat. Hist. 1842, 61: Boleosoma tessellatum 

 DcKay, New York Fauna Fish. 184'2, 20; Agassiz, Lake Superior, 299; Giinther, i, 77; 

 Cope, Journ. Acad. Nat. Sci. Phila. 1H68, 1213; Vaillant, 1. c. 79: Boleosoma maeidaliceps 

 Cope, Proc. Amer. Philos. Soc. 1870, 269: Estrtlla atromaculata Girard, Proc. Acad. 

 Nat. Sci. Phila. 18r^9, 65.) 



ib. Cheeks and breast (normally) naked. 



d. Body fusiform, with slender caudal peduncle; fins moderate; second dorsal 

 with 11 or 12 rays; lateral line usually not quite complete. 



766. B. mfigB'saEBi (Raf ) Jor. — Johvv?j Darter. 



Body fusiform, slender. Head conical, moderate, the snout some- 

 what decurved. Mouth small, lower jaw included. Cheeks and breast 

 naked (specimens occasionally found with these regions closely scaly); 

 opercles scaly; space before dorsal mostly scaled. Fins high, but 

 smaller and lower than in the other species. Coloration pale oliva- 

 ceous; back much tessellated with brown; sides with numerous small 

 W-shaped blotches; head speckled above, mostly black in the males; 

 a blick line forward from eye, and sometimes a line downward also; 

 fins barred; males in the spring blackish anteriorly, sometimes almost 

 entirely black. Tubes of the lateral line obsolete on the last 4 or 5 

 scales. Head 4^; depth 5. D. IX-13; A. I, 8; scales 5-51-9. L. 2^ 

 inches. Ohio Valley, Great Lake region, and Upper Mississii)i)i ; very 

 abundant where found. It perhapi* varies into B. olmstedi, but may be 

 distinguished, as far as we have seen, by the shorter dorsal. 



{Etheostoma nigra Raf. Iclith. Oh. 1820, 37: Boleosoma viaculatum Agas9.iz, Lake Su- 

 perior, 1850, 30.3: Boleosoma irevipinne Cope, Proc. Amer. Philos. Soc. 1870,208; Giin- 

 ther, i, 77: Boleosoma mut«<»m Vaillant, 1. c. 88: 1 Pceeilichilr^s mesoens Cope, Proc. Acad. 

 Nat. Sci. Phila. 18o4, 232: Bohoioma macitlatum Jordan, Man. Vert. cd. 2, 224.) 



