188 PROCEEDINGS OF THE ACADEMY OF [1895. 



a,. Rostrum short, scarcely longer than the eyes. 



b,. Rostrum and telson blunt S. septemcarinata (6). 



b 2 . Rostrum and telson more acute &'. sa?*si. 



a 2 . Rostrum long, about as long as the antennale scale . . S. hystrix. 



1. Sabinea septemcarinata (Sabine), 1824. 



Crançon septemcarinatns Sabine, Suppl. Append. Parry's Toy. 1824, p. 236. 



pi. 2, fig. 11-13. Milne-Edwards, Hist. Nat. Crust. II, 1837, p. 343. 

 Sabinea septemcarinata (Sab.) Kröyer, Naturh. Tidsskr. IV. 1842, p. 244, pi. 



4, fig. 34-40, pi. 5, fig. 41-44. Metzger, Jabresb. Comra. Unters, deutscb. 



Meer. II, III, 1875, p. 291. Miers, Ann. Mag. Nat. Hist. (4) XX, 1877, p. 



58. Kingsley, Bull. Essex Inst. X, 1878, p. 55. Smitb, Trans. Connect. 



Acad., V, 1879, p. 57, pi. 11, fig. 5, 9U3. Hoek, Niederl. Arch. Zool., Suppl. 



I, 7, Crust. 1882, p. 12. G. O. Sars, Den Norsk. Nordh. Exp. Zool. Crust. 



II, 1886, p. 7. Stuxberg, Vega Exped., V, 1887, p. 54. Bate, Challenger 

 Macrur. 1888, p. 493, pi. 89, fig. 2, pi. 90, fig. 1. Ortmann, Zoolog. Jahrb., 

 V, 1890, p. 536. 



Geograjjhical distribution: Arctic seas extending southward into 

 boreal seas. — Norway, to 106 fath. (M. Sars, Metzger); Barents 

 Sea and Nowaja Semlja, 37-160 fath. (Hoek); Spitzbergen (Kröyer, 

 G. O. Sars); Iceland (Kröyer); Greenland (Reinhardt, Lütten); 

 Davis Strait (Sabine); Grinnell Land (Miers); N. E. coast of 

 America: from Gulf of St. Lawrence to Massachusetts Bay, 25—85 

 fath. (Smith, Bate); Arctic coast of Siberia (Stimpson, Stuxberg). 



2. Sabinea sarsi Smith, 1879. 



Smith, Trans. Connect. Acad., V, 1879, p. 59, pi. 11, fig. 6, 7, 8. G. O. "Sars, 

 Forh. Vidensk. Selsk. Christiania, 1882, No. 18, p. 46. Smith, Rep. U. S. 

 Fish Comm. f. 1882, 1884, p. 364. 



Geographical distribution: Northeastern coast of America, 60-150 

 fath. (Smith); Norway: Lofoten (Smith), Christianssund and 

 Stavanger (G. O. Sars). 



3. Sabinea hystrix (A. Milne-Edwards), 1881. 



Paracrangon hystrix A Milne-Edwards, Annal. Sei. Natur. (8) Zool. XI, 



1881, p. 6. 

 Sabinea princeps Smith, Bull. Mus. Comp. Zool. X, 1882, p. 38, pi. 8, fig. 1. 

 Smith, Rep. U. S. Fish Comm. f. 1882, 1884, p. 364. 



Geographical distribution : Atlantic: eastern coast of United States, 

 464-888 fath. (Smith); Guadeloupe, 734 fath. (A. Milne- 

 Edwards). 



PRIONOCRANGON Wood-Mason and Alcock, 1891. 

 Wood-Mason and Alcock, Annal. Mag. Nat. Hist, (6) VIII, 1891, p. 361. 

 Second pereiopoda present, without chela, rather robust with a 

 fringe of long hairs. Eyes and eye-stalks wanting. Carapace with 

 a spiny median keel. — Gills unknown. 

 Only one species known. 



