CALIFORNIA STALK-EYED CRUSTACEA. 177 



exterior maxillipeds are very slender and short hairy. The fourth abdom- 

 inal segment has a tooth and inside of it an emargination either side of 

 middle, and the fifth is nearly similar." 



Puget Sound, Oregon, obtained by dredging (Dana). 

 Campbell Is. (Whiteaves); Vancouver's Is. (Smith); Cal- 

 ifornia and Japan (Faxon, Miers). 



Genus Sclerocrangon Sars. 



Carapace sculptured and armed with spines in the median line. Kos- 

 trum securiform, expanded below. First chelipeds stout; second pair 

 slender, elongated, with a narrow hand and short dactyls. Abdomen gen- 

 erally sculptured and carinated above. 



Type. — S. boreas (Phipps). 



Sclerocrangon boreas (Phipps). 



Cancer boreas Phipps, Voyage North Pole, 1774, p. 190, PI XII, fig. 1. 

 Cancer homaroides Fabr. O., Fauna Groenlandica, 1780, p. 241; Mohr. Isl. 



Naturh. 1786, p. 108, No. 245, PL V. 

 Crangon boreas Fabr., Syst. Ent. SuppL, p. 409. Sabine, Appendix to 



Parry's 1st Voyage, No. 10, 1821, p. 57. Ross and Owen, Crust, in 



Appendix to Ross' 2nd Voyage, 1835, p. Ixxxi. 

 Cheraphilus boreas Kinahax, Proc. Roy. Irish Acad., Vol. VIII, 1864, p. 68. 



Miers, Ann Nat. Hist. (4), Vol. XX, 1877, p. 57. Murdoch, Rep. 



Int. Polar Expd. to Pt. Barrow, 1885, p. 139. 

 Sclerocrangon boreas Sars, Den Norske Nordhavs-Expedition, VI, 



Zoologi, Crust., Part 1, p. 15. Stebbing, Crustacea, p. 228. Ort- 



mann, Zool. Jahrb. Abth. f. Syst,, Bd. V, 1890, p. 532. 

 Crangon (Sclerocrangoji) boreas Ortmaxn, Proc. Acad. Nat. Sci. Phila., 



1895, p. 178. 



Carapace with three spines on the dorsal carina; a toothed carina on 

 the branchial regions. Rostrum triangular, acute. Abdomen sculptured, 

 the anterior segments with a median dorsal carina, the sixth segment with 

 a double carina with a sulcus between the ridges. Epimera of the abdom- 

 inal segments with only one spine each. Telson sulcate. 



Arctic Europe and America, Labrador, Alaska, Si- 

 beria, ''California," (Ross and Owen 1. c). 



12 



