80 S, I. Smith — Crustaceans of the Atlantic Coast. 



examined ; these collections have been made in Jiily, August, Sep- 

 tember, October and April, so that the species evidently breeds 

 during a large portion of the year, 



Hippolyte polaris Ross. 



Alpheus polaris Sabine, in Supplement to appendix of Parry's [first] Voyage, p. 



ecxxxviii, pi. 2, figs. 5-8, 1824. 

 Hippolyte polaris J. C. Ross, in John Ross, Appendix to narrative of a second Voyage 



in search of the northwest passage, p. Ixxxv, 1835 ( ? ). 

 Hippolyte horealis J. C. Ross, in John Ross, op. cit., p. Ixxxiv, pi. B, fig. 3, 1835 ( $ ). 

 f Hipipiolyte culiellata Norman, in Report of exploring the Hebrides, part ii. Report 



British Assoc. Adv. Sei., 1866, p. 200, 18G7 ; Last Report on dredging among the 



Shetland Isles, op. ult. cit., 1867, p. 265. 



Plate XI, figures 1 to 4. 



Massachusetts Bay !, off Salem, 1877: 35 fathoms, mud and clay 

 nodules ; and 48 fathoms, soft mud [rtj. Between Cape Ann and the 

 Isles of Shoals !, 33 fathoms, gi-avel and stones, 1873 [b~\. Casco Bay !, 

 1873 [c]: near West Cod Ledge, 10 to 15 fathoms, rocky, and from 

 stomachs of the cod taken at the same locality. Also off Seguin Isl- 

 and !, 48 fathoms, gravel, 1873 [d]. Cashe's Ledge !, 30 to 40 fathoms, 

 gi-avel [e]; and near the Ledge, 65 fathoms, mud and gravel, 1874 

 [/]. Bay of Fundy!, 1870, 1872 [g]. About east-southeast fi-om 

 Cape Sable, Nova Scotia !, north latitude 42° 45', west longitude 66° 

 27', 75 fathoms, fine sand and mud, 1877 [AJ. Off Cape Negro!, 

 Nova Scotia, 59 fathoms, pebbles, sand and rocks, 1877. Halifax!, 

 Nova Scotia, 1877: 16 fathoms, rocks, and stones and red algje [i]; 

 18 fathoms, fine sand [A] ; and 25 fathoms, gravel. Off Halifax !, 

 1877 : 25 fathoms, rocks and nullipora [I] ; 52 fathoms, fine sand and 

 mud; and 100 fathoms, fine sand [ni~\. Gulf St. Lawrence! (Whit- 

 eaves, 1871). Labrador ! (Packard). Grinnell Land (Miers). Green- 

 land (Kroyer, et al.), as far north as 81° 44' (Miers). Arctic Ocean, 

 north of Bering Straits (Stimpson). Spitzbergen (Kroyer, Miers). 

 West coast of Norway! (G. O. Sars) [n]. North Sea (Metzger). 

 ? Shetland Islands {JI. cnltellata Norman). 



This species presents another case of differences between certain 

 individuals among the adult males, or perhaps more properly old 

 males, on the one hand, and the females and younger males, on the 

 other hand ; that is, the borealis-ioYia bears much the same relation 

 to the original polaris as gihha does to Gaimardii, and a relation 

 somewhat similar to that of Phippsii to turgida. The specimens 

 before me show a very complete series connecting the most character- 

 istic form of horealis with the ordinary forms oi polaris. Of the spe- 



