ACADEMY OF SCIENCES. 33 



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. Eight 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? Calif ormensis. 



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 Speocarcmus Caroli- 

 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 

 carinas 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, 

 1st, a small blunt spine; 2d, a small acute spine; 3d, a large acute spine; 1th, 

 a very small acute one; and 5th, a bluntish spine formed by ihe union of the 

 two outermost carinas 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 plate produced into an acicular 

 spine, movable finger with two spines only on its interior edge; three movable 

 spines at proximal end of manus. 



The whole of the upper surface of this rare and beautiful crustacean is 

 marbled, in its dry state, with yellowish brown spots on a dark brown ground, 

 while the tips of the caudal appendages are a vivid red. 



Length, from tip of rostrum to tip of movable spines, 3.80 inches; of 

 carapace only, 0.82 inch; width of abdomen, 0.63 inch. 



This siugle specimen in this collection was found at low tide, on sandy mud 

 fiats at San Diego. 



This and Squilla De-saussurei, Stimpson, are, so far as I am aware, the only 

 Stomapoda yet discovered on the shores of California. 



Peoc. Cal. Acad. Sci., Vol. VII.— 3. 



