Acanthus spino-hirsutus. _ a 
Besides the generic characters given above, this species may be distin- 
guished by ten spines upon the front, pointing straight forward; a group of 
four on each side the central emargination, and a single spine close to the 
outer antenna, the second joint of which reaches nearly to its extremity; 
six or seven spines on lower margin of orbit, and four larger spines on 
antero-lateral margin of carapax, besides those on upper margin of orbit. 
Front portion of carapace and upper parts of all the feet thickly covered with 
long stiff hairs, mixed, on the chelipeds only, with spines similar to those of 
the front of carapace. The whole upper surface of the carapax, the meros of 
the fifth pair of feet, and the posterior portion of the sternum are covered 
with a short and thick pubescence. Right hand considerably the larger; 
fingers of both hands with several large, blunt teeth or tubercles on their 
inner margin. The spines upon the hands change gradually to tubercles as 
they approach the fingers. ‘ 
Length, one inch; breadth of carapace, 1.12. 
Eucrate? Californensis. 
Surface of carapace smooth, very slightly granulate close to margins; antero- 
lateral margin three-toothed; carapace level transversely, but considerably 
curved longitudinally; abdomen of male five-jointed; right hand considerably 
larger than the left; hand broad and thin; laminate on superior margin; 
carpus with a spine on the interior distal margin; four hinder pairs of legs 
rounded, tarsi pointed. 
The aspect of this species is exactly that of Stimpson’s Speocarcinus Carolt- 
nensis, as figured in Notes on North American Crustacea, No. 1, but the abdo- 
men is different. 
Width, 1.06 inch; length, 0.82 inch. 
The only specimen (dried) is from San Diego. 
Pseudosquilla marmorata. 
Carapace much narrowed in front, as in Squilla, but the body stiff and without 
carinz upon the thoracic or abdominal segments, except upon the two last. 
Penultimate segment with two central spines flanked on each side by two 
lateral ones; a central carina, and five lateral ones on each side of the apical 
segment of abdomen. The central carina terminates in a spine, flanked just 
beneath by the two movable spines, counting from which, on each side are, 
Ist, a small blunt spine; 2d, a small acute spine; 3d, a large acute spine; 4th, 
a very small acute one; and 5th, a bluntish spine formed by the union of the 
two outermost carine of the last abdominal segment; the penult joint of the 
caudal appendages armed with nine spines, the last as long as the last joint 
of those appendages; first joint of caudal appendages prolonged backwards 
into a spine almost as long as the remaining two joints, and armed on its 
inner edge with two strong spines; antennary plute produced into an acicular 
spine, movable finger with two spines only on its interior edge; three movable 
spines at proximal end of manus. 
