396 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY -- IV. 



the spines of cat-fisli. Naked area in front of pectorals large. Pelvic 

 bone lanceolate. Ventral spine with a basal cusp. Spines all serrate, 

 those of anal ami soft dorsal small. Head 3i; depth -U. D. II-I, 13; 

 A. I, 9. Lateral plates 33. L. 4 inches. North Atlantic; very abund- 

 ant on both coasts. 



(Linn. Syst. Nat. (ninthcr, i, 1: fiaNicroxtciix nmeboraociUW Cuv. A- Val. iv, 5iK>: Gas- 

 terosti'iix liiticulcdtiix .Storcr, Hist. Fish. Mass. -10; QiuteroBteus bia&deahu <-t norrhiH-iuvnsis 

 DoKay, New York Fauna, Fish. <>5, (;:i: (ianteroxtent niijer Cuv. & Val. iv, 504 ; Gtm- 

 ti n>i!riix Irni-hiirnn Cuv. & Val. iv, 4*1: Gastcrontcuy bispi nouns Walbamn. Aru-di Pise. 

 179J, 450, the- it'.doMt American name.) 



Subsp. catapfaraCtllS (Pallas) J. & G. Salmon-killer; Stickleback. 



Extremely similar, but more robust, the body and head a little shorter 

 and deeper. Caudal keel very strong. San Francisco to Alaska and 

 Kamtschatka; very abundant northward. 



(OasterdoanthuB cataphraotus Pallas, Mom. Acad. Pctersb. iii, 3*25, 1811: GastcrosteitH 

 obolarlns Cuv. & Val. iv, 500: Gantcronteus scrratiix Ayres, Proc. Cal. Acad. Nat. Sri. 

 Iti55, 47: GautcroateiiN iiiltniteiiiim Cirard, Proc. Ac. Nat. Sci. Phila. LS'.'i, i:;5: ti<tntir- 

 oatcus iiwiiljitux Rich. Last Arctic Voyage.) 



194. APELTES DeKay. 



(DeKay, Now York Fanua, Fish. 1842, 67, nomcn miditm: typo Gasterosteus quadroons 

 Mitch.) 



Body moderately elongate, somewhat compressed, the back elevated 

 at the beginning of the soft dorsal iiu, thence 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 each side of 

 the abdomen, below which the strong ventral spines are denressible. 

 Chest mostly bony; bare area in front of pectorals small, but distinct 

 dill 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 

 ditlerent angles; attached spine of dorsal and anal well developed : a 

 bony ridge on each side of the spiuous dorsal. (, privative; -c'Arij, 

 shield.) 



<;:5v. A. q:!;i<lr:i4>iis ( Mitch.) Hrrvnnrt. 



Brownish olive above, mottled with darker; silvery below; male, 

 almost black: ventrals with the membrane red in spring. Head t in 

 length; depth 1. Caudal peduncle very long and slender, about ."> in 

 length. I). Ill I, 11; A. I, S. L. 1 A to iM inches. Atlantic coa.st of 

 the Tinted States; very abundant northward. 



(<;ii:<ti-ni:<trim iiiiti'lwitx Mitch. Trans. Lit. and Phil. S;>r. i, 4:5(1, 1815: Gastcrostcits 

 apclttx Cuv. (V Val. iv, 505; GuyleroaU-un quadraeax (iiintlu-r, i, 7.) 



