38 THREE CRUISES OF THE “BLAKE.” 
characteristic of our littoral fauna, and are also found pelagie 
in the gulf-weed, there are comparatively few deep-water species 
and not so many novelties; but there are new species of a group 
of very small crabs, like Pilumnus, Neopanope, and Micropanope 
(Fig. 228), charac- 
teristic of the West 
Indian fauna at 
moderate depths. ¢ 
Off the Atlantic 4% à; 
coast of the United Fig. 228, — Micropanope 
"s een ates however, rris) 
eryon quinque- 
dens, previously known only from small specimens taken off 
the northern coast of New England, was found growing to 
enormous size at depths of from 200 to 800 fathoms, from 
the south coast of New England to points far south of Cape 
Hatteras. Specimens taken by the “ Blake” show this species 
to be one of the very largest of the Brachyura, the carapace 
in some specimens being five inches long by six broad. Most 
interesting among the Leucosoidea is Acanthocarpus bispino- 
sus. (Fig. 229.) Here- 
tofore the only species of 
the genus known was A. 
Alexandri, which is armed 
with an enormous spine 
upon the outside edge of 
the claw, instead of on 
the side of the carapace. 
The claws are provided 
with a stridulating appa- 
ratus, which is rubbed against the edge of the carapace. 
Quite striking is the large number of new forms of Dorip- 
pidoidea, a group previously unknown from the Western Atlan- 
tic and new to America. Cyclodorippe nitida (Fig. 230), a 
small species with smoothly rounded (Fig. 231) and highly 
polished carapace, will serve as an example. This and two 
other species of the same genus were taken in 90 to 300 fath- 
oms. Belonging to the same group is the remarkable and 
Fig. 229. — Acanthocarpus bispinosus. 
(Milne-Ed wards.) 
