DECAPODS 63 



Distribution.— T\i\^ species occurs sparingly from Unalaska to Point 

 Arena, California; 9-77 fathoms. 



It has been taken by W. H. Dall at Captains Harbor, Unalaska, 9 

 fathoms; Port Etches, 12-18 fathoms; Sitka Harbor, 15 fathoms. By the 

 Albatross zx Gulf of Georgia, British Columbia, 67 fathoms, station 2863 ; 

 Strait of Fuca, 53 fathoms, station 3460 ; Bellingham Bay, Washington, 

 1 1 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 i (Sowerby). 



Plate III, fig. 5. 



Cancer spinus SoWERBY, British Miscellany, 47, pi. xxiir, 1805 {teste Steb- 

 bmg). 



Alphceus spinus Leach, Edinb. Encyc, vil, 431, 1814; Philadelphia reprint, 



VII, 271, 

 Alpheus Spinus iJ^KQ.n, Trans. Linn. Soc. London, XI, 347, 18 15. 

 Hippolyte SowerbcEi ijLkQYi., Malac. Pod. Brit., pi. xxxix, 1817. 

 Hippolite sowerbei J. C. Ross, in John Ross, Appendix to Narrative of a 



Second Voyage in Search of a North- West Passage, li, p. Ixxxiii, pi b 



fig. 2, 1835. "^ ' 



Hippolyte spinus WHITE, List Crust. Brit. Mus., ^6, 1847.— Bell, Hist 



Brit. Crust., 284, 1853.— Smith, Trans. Conn. Acad. Arts Sci., v. 68* 



1879. ' 



Hippolyte spina Stiuvso^, Proc. Acad. Nat. Sci. Phila., xil, -14 lio-i) 1860- 



^ Ann. Lye. Nat. Hist. N. Y., x, 126, 1871. 

 Spirontocaris spinus Bate, Challenger Report, xxiv, 596, pis, cvi and cvii 



1888 (part).— Rathbun, The Fur Seals and Fur-Seal Islands of the 



North Pacific Ocean, Pt. in, 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 5<r*''^^^*''^^^'^V 

 Pacific specimens do the maxillipeds reach the V^^? j 



end of the acicle, while in many Atlantic ones ^-^-..^^..^^ 



they do); in the carination and the length of the Fig.i,. spirontocaris spina, 

 spine of the third abdominal segment. ^^^Lz^l^^^''^ "' * <^ ^^^• 



1 In 'regard to spina vs. spinus, Stimpson says (Ann. Lye. 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 spina, not spinus. Spinus is not an adjec- 

 tive, and means only the sloe-tree, which could scarcely have been intended." While 

 spinus has another signification, from cKtvoq, 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. 



