402 • CONTRIBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 
a. Dorsal spines normally 9. 
h. Cheeks scaly; second dorsal with 13 or 14 rays. 
K. oaiBBsSedi (Storer) Agassiz. 
Hotly slender, little compressed, with long caudal peduncle. Head 
slender, rather pointed. Cheeks and opercles scalj^; 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 5J. D. IX-14; A. I, 
0; Lat. 1. 50. L. 34 inches. Great Lakes to Georgia and Massachu- 
setts; the commonest eastern species. A southern form, var. macula- 
ticep.s, has the cheeks scaly above only, and is more speckled; var. atro- 
macHlatnm, found eastward, has the breast closely scaled. 
{Etheontoma ohmtedi Storer, Bost. Joiirn. Nat. Hist. 1842, 61: BoJeosoma tesseUalnm 
DcKay, New York Fauna Fish. 1842, 20; Agassiz, Lake Superior, 299; Giinther, i, 77; 
Cope, Joiirn. Acad. Nat. Sci. Phila. 1868, 1213; V^aillant, l.c. 79: Bohosoma maculaticeps 
Coi)e, Proc. Ainer. Philos. Soc. 1870, 269: Eatrdla atromacidata Girard, Proc. Acad. 
Nat. Sci. Phila. 1869, 66.) 
hb. 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 comjjlete. 
7G3. 15. Baej^B’BDEBa (Raf.) Jor. — Jobiin:!/ Barter. 
Body fusiform, slender. Head conical, moderate, the snout some- 
what decurved. Mouth small, lower jaw included. Cheeks and breast 
naked (s])ecimens 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; Itack much tessellated with brown; sides with numerous small 
W-shaped blotches; head speckled above, mostly black in the males; 
a bl.ick 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-12; A. I, 8; scales 5-51-9. L. 
inches. Ohio Valley, Great Lake region, and Upper Mississippi; very 
abundant wdiere found. It perhaps varies into B. olmsfedi, but may be 
distinguished, as far as we have seen, by the shorter dorsal. 
{Etheostoma nigra Raf. Iclith. Oh. 1820, 37: Bolcosoma macvlatum Agasniz, Lake Su- 
perior, 1850, 305: Bolcosoma breripinne Coioi, Proc. Aiuer. Philos. Soc. 1870,268; Giiu- 
thcr, i, 77 : Bolconoma miitatnm Vaillant, 1. c. 88: 1 PccciUchthjs mescena Cope, Proc. Acad. 
Nat. Sci. Phila. 1864, 232: Boleoaoma maculatum Jordan, Man. Vert. ed. 2, 224.) 
