DECAPODS 63 
Distribution.—This species occurs sparingly from Unalaska to Point 
Arena, California; 9-77 fathoms. 
It has been taken by W. H. Dall at Captains Harbor, Unalaska, g 
fathoms; Port Etches, 12-18 fathoms; Sitka Harbor, 15 fathoms. By the 
Albatross at Gulf of Georgia, British Columbia, 67 fathoms, station 2863; 
Strait of Fuca, 53 fathoms, station 3460; Bellingham Bay, Washington, 
11 fathoms, station 3612; off Destruction Island, Washington, 32 fathoms, 
station 2869; off Grays Harbor, 48-58 fathoms, stations 2870, 3046— 
3048; off Columbia River, 68 fathoms, station 2882; off Oregon, 38-77 
fathoms, stations 3057-3059; off Point Arena, California, 51 fathoms, 
station 3351. 
SPIRONTOCARIS SPINA! (Sowerby). 
Plate 111, fig. 5. 
Cancer spinus SOWERBY, British Miscellany, 47, pl. XXIII, 1805 (deste Steb- 
bing). 
Alpheus spinus LEACH, Edinb. Encyc., vu, 431, 1814; Philadelphia reprint, 
VII, 271. 
Alpheus Spinus LEACH, Trans. Linn. Soc. London, XI, 347, 1815. 
Hippolyte Sowerbai LEACH, Malac. Pod. Brit., pl. XXXIX, 1817. 
Hippolite sowerbei J. C. Ross, in John Ross, Appendix to Narrative of a 
Second Voyage in Search of a North-West Passage, I, p. Ixxxiii, pl. B, 
fig, 2, 1835. 
Hippolyte spinus WHITE, List Crust. Brit. Mus., 76, 1847.—BELL, Hist. 
Brit. Crust., 284, 1853.—SMITH, Trans. Conn. Acad. Arts Sci., v, 68, 
1879. 
Hippolyte spina STIMPSON, Proc. Acad. Nat. Sci. Phila., XII, 34 (103), 1860; 
Ann, Lyc. Nat Hist. N. Y., X,.126, 1371, 
Spirontocaris spinus BATE, Challenger Report, XXIV, 596, pls. CVI and Cvq, 
1888 (part).—RATHBUN, The Fur Seals and Fur-Seal Islands of the 
North Pacific Ocean, Pt. 111, 556, 1899 (part). 
There is considerable variation, in this species, in the height of the 
carapace in proportion to its length; in the eyes, which may be widely 
pyriform or smaller and subcylindrical; in the 
length of the outer maxillipeds (in none of the aks 
Pacific specimens do the maxillipeds reach the 
end of the acicle, while in many Atlantic ones 
they do); in the carination and the length of the | Fic.19. Spirontocaris spina. 
; . F Side of carapace of ? (Xx 12). 
spine of the third abdominal segment. Station 2842. . 
1In regard to spina vs. spinus, Stimpson says (Ann. Lyc. Nat. Hist. N. Y., 
x, 126, 1871): ‘‘ Sowerby, by the name he gave to this species, doubtless had refer- 
ence to a spine, or the backbone: in Latin sfiza, not sfinus. Spinus is not an adjec- 
tive, and means only the sloe-tree, which could scarcely have been intended.”” While 
spinus has another signification, from orfvoc, the name of a small bird, yet it was 
without doubt used by Sowerby to call attention to the spine or spines of the animal. 
