Jordan and Evermann. Fishes of North America. 1057 



gravel and weeds. The typical form (nigrum) has the lateral line slightly 

 interrupted behind, the dorsal rays usually IX-12, and the fins rather low. 

 (niger, black.) 



Etheostoma nigrum, RAFiNESQUE, Ichth. Ohiensis, 37, 1820, Green River, Kentucky. 

 Boleosoma maculatum, AQASSIZ, Lake Superior, 305, 1850, Lake Superior. (Coll. Agassiz). 

 Boleosorna olmstedi brevipinnis, COPE, Jouru. Ac. Nat. Sci. Phila., 1868, 214, Kiskiminitas River, 



Pen-nsylvania. 

 Boleosoma mutatum, VAILLANT, Eecherches sur Etheostomatidae, 88, 1873; substitute for maculatum 



of AGASSIZ, changed on account of the prior maculatum of KIRTLAND. 



Pcccilichthys beani, JORDAN, Proc. U. S. Nat. Mus., 479, 1884, Tabo Creek, I/afayette County, 

 , Missouri. (Type, No. 35754.) 

 Boleosoma nigrum, BOULENOER, Cat., i, 93. 



Represented Northeastward by 



U46a. BOLEOSOMA NIGRUM OLMSTEDI (Storer). 

 (TESSELLATED DARTER; GRAND ORANCHEE.) 



Head 4; depth -5*. D. IX-14 or 15; A. I, 9; scales 47 to 52. Body 

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

 rather pointed. Cheeks and opercles scaly ; space before dorsal and breast 

 usually naked, sometimes closely scaled. Fins very high, pectorals reach- 

 ing 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. Length 3| inches. Lake Ontario to 

 Massachusetts, south to Virginia, chiefly coastwise and east of the 

 Alleghames ; probably intergrades with Boleosoma nigrum, but generally 

 the dorsal is longer in olmstedi, the fin higher, and the head more scaly. 

 (Named for Charles H. Olmsted, an early student of the fishes of the 

 Connecticut River.) 



Etheostoma olmstedi, STOKER, Journ. Bost. Soc. Nat. Hist., 1841, 61, pi. 5, fig. 2, Hartford, Con- 

 necticut. (Coll. Chas. H. Olmsted). 



Perca minima, HALDEMAN, Journ. Ac. Nat. Sci. Phila., vm, 1842, 330, Susquehanna River. 



Boleosoma tessellatum, DE KAY, New York Fauna: Fishes, 20, pi. 20, fig. 57, 1842, "most of the ' 

 fresh-water streams of New York;" no definite locality given. 



Etheostoma atromaculata, GIRARD, Proc. Ac. Nat. Sci. Phila., 1859, 66, Potomac River, 

 vicinity of Washington, D. C.; a slight variety with nape and breast closely scaled; 

 this form found also in Cayuga Lake, New York. 



? Boleosoma sesopus* COPE, Proc. Am. Philos. Soc., 1870, 270, Loyalsoc Creek, a tributary of 

 the Alleghany River in Pennsylvania. 



Boleosoma olmstedi, JORDAN & GILBERT, Synopsis, 492, 1883. 



* Boleosoma sesopus (Cope): D. VII-14; A. 10; scales 5-47-8. Body stout, the back rather 

 elevated; the caudal peduncle somewhat contracted; muzzle somewhat decurved; mouth 

 terminal. Dorsal fins much elevated. Color light brown, with 6 small dark dorsal spots, and 

 10 similar small spots along the dorsal line; a bar around muzzle and one below eye. Length 

 234 inches. Loyalsoc Creek. (Cope.) One specimen known, probably an accidental variation 

 of Boleosoma olmstedi. 



P. N. A. 68 



