S. I. Smith — Crustaceans of the Atlantic Coast. 
49 
much smaller and more crowded on both chelipeds in Kroyeri than 
in pubescens. In Kroyeri the outer or left hand edge of the propodus 
of the smaller eheliped, as seen from above, is distinctly incurved near 
the base of the digital portion, while in pubescens the corresponding- 
edge is full and regularly, though not strongly, arcuate, so that the 
digital portion of the propodus is much wider toward the base than in 
Kroyeri. In Kroyeri the dorsal carina of the propodus of the smaller 
eheliped is much nearer the right side toward the base than in pubes- 
cens , is very high and sharply prominent, and surmounted by a single 
series of dentiform teeth; the narrow space beneath the carina to the 
right is nearly or quite destitute of spines or tubercles; and the outer 
surface, or that to the left of the carina, is flat or slightly concave, 
and covered with very small tubercles. In pubescens the carina is 
low, obtuse and armed with a crest of spines which becomes a double 
series proximally ; and the outer surface is slightly convex and is 
armed with scattered spiniform tubercles. 
Ivroyer’s figure in Gaimard’s Voyages en Scandinavie, Crustaces, 
plate ii, figure 1, evidently represents the Kroyeri , although the 
tubercles upon the chelipeds are represented in the figures as a 
little too large and more scattered than in any specimens I have 
seen, but this is probably due to a slight and very natural inaccuracy 
on the part of the artist or engraver ; the original description of 
Pagurus pubescens (Naturhistorisk Tidsskrift, ii, p. 251, 1839), how- 
ever, applies best to the other species, which Ivroyer evidently had 
before him when writing the first phrase of the diagnosis, “ cephalo- 
thoracis superfieie dorsali pedibusque pilis flavis dense obsitis,” which 
would not apply to any specimens of Kroyeri or to his figure pub- 
lished ten years after. Kroyer mentions having numerous specimens 
from different places on the Greenland coast and from Iceland, and 
it is probable, as Stimpson suggests, that he failed to distinguish the 
two species, as nearly all carcinologists have done since. 
While h aving a geographical range similar to the pubescens , the 
Kr'&yeri is apparently a more strictly arctic species, and, upon the 
New England coast, is most common in deep water and upon the 
off shore banks. 
Stellwagen’s Bank !, 29 to 44 fathoms, rocky and sandy, 1873, com- 
mon. Massachusetts Bay !, off Salem, 43 and 50 fathoms, mud, 1*77. 
Casco Bay!, 8 to 30 fathoms, rocky, spongy and sandy bottoms, and 
occasionally on muddy bottoms also, 1873. Bay of Fundy!, 1*04, 
1868, 18/0, 1872, in similar situations as in Casco Bay, and more 
common and of larger size; in 1872, it was also dredged off Head 
Trans. Conn. Acad., Vol. V. 7 January, 1879. 
