396 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
the spines of cat-fish. Naked area in front of pectorals large. Pelvic 
bone lanceolate. Ventral spine with a basal cusp. Spines all serrate, 
those of anal and soft dorsal small. Head 3^; depth 4J. D. II-I, 13; 
A. I, 9. Lateral plates 33. L. 4 inches. North Atlantie; very abund- 
ant on both coasts. 
(Liun. Syst. Nat. Giiutlier, i, 4: Gasierosfeiis norehoraccnsls Cuv. &. Val. iv, 502: Gas- 
terosteus hiaciilcatns Storer, Hist. Fish. Mass. 40; Gasteroi^tem blaaileafiv^ ct norcboracensis 
DeKay, New York Fauna, Fish. 05, OG: Gaiiterosteus nir/cr Cuv. &Val. iv, 504; Gas- 
terostciis trackarus Cuv. & Val. iv, 481: Gasieroateus bis2niiosi(s Walbauui, Arteili Pise. 
1792, 450, the oldest American uame.) 
Subsp. ca«as>Ssii’acttls (Pallas) J. & G.—Salmon-MUer; Stickleback. 
Extremely similar, but more robust, the body and head a little shorter 
and deeper. Caudal keel very strong. San Francisco to .^Uaska and 
Kamtscliatka; very abundant northward. 
(Gastcracanthiis cafapliractiis Pallas, M6m. Acad. Petersb. iii, 325, 1811: Gasterosteus 
obolarias Cuv. & Val. iv, 500: Gasterosteus serratus Ayres, Proc. Cal. Acad. Nat. Sci. 
1^555, 47: Gasterosteus inUrmedius Girard, Proc. Ac. Nat. Sci. Phila. 1856, 135: Gaster- 
osteus inscidptus Rich. Last Arctic Voyage.) 
194.— APELTES DeKay. 
(DeKay, New York Fauna, Fish. 1842, 67, nonien nudum: type Gasterosteus quadracus 
Mitch.) 
Body moderately elongate, somewhat compressed, the baek elevated 
at the beginniug of the soft dorsal fin, thenee declining in nearly a 
straight line to the tip of the snout. Tail very slender, not keeled. 
No bony dermal plates; the skin naked. Innominate bones not joined 
on the median line but separated, forming a bony ridge on eaeh side of 
the abdomen, below which the strong ventral spines are depressible. 
Chest mostly bony; bare area in front of pectorals small, but distinct 
Gill-rakers rather short. Gill-membranes attached to the isthmus, 
without free edge. Free dorsal spines 3, strong, the first the longest, 
directed to one side; the next two directed toward the other side at 
different angles; attached spine of dorsal and anal well developed ; a 
bony ridge on each side of the spinous dorsal, (a, privative; 
shield. ) 
632. A. qsiadmciis (Mitch.) Bievoort. 
Brownish olive above, mottled with darker; silvery below; male 
almost blaek; ventrals with the membrane red in spring. Head 4 in 
length; depth 4. Caudal i>eduucle very long and slender, about 5 in 
length. 1). Ill — I, 11; A. I, 8. L. 14 to 24 inehes. Atlantic coa.st of 
the Uniteil States; very abundant northward. 
{Gasterosteus quadracus Mitch. Trans. Lit. and Pliil. Sue. i, 430, 1815: Gasterosteus 
apclies Cuv. & Val. iv, 505; Gasterosteus quadracus Giiuther, i, 7.) 
