Y 
478 Stimpson on the Crustacea and Echinodermata 
tubercles, instead of at the first pair of antero-lateral teeth, 
(S of Dana.) In these females the characters of the abdo- 
men usual in female Lithodine are prominently shown, the 
terminal apex being turned considerably to the right of the 
median line of the body; there are no marginal plates on 
the left side, where the greater mass of the ova are placed, 
the ovigerous feet being wanting on the right side with the 
exception of that of the first pair. 
The dimensions of three specimens are as follows :— 
Loc. einig Width. Proportion. 
San Francisco, 9 4.72 inch. — 5.31 inch. 1:1-13 inch. 
is E 9 5.58 6.30 1:1.13 
? (Gibbons) ? 10.00 10.25 1:1 03 
_ All the specimens yet found were taken off the mouth of 
San Francisco Bay, and near the Farallone Rocks. They 
have been brought to the market of the city by fishermen, 
who are encouraged to preserve them when caught, by the 
high prices (from five to ten dollars) at which they are easily 
sold. 
Mus. Cal. Acad.; North Pacific Expedition. 
LITHODES SPINOSISSIMUS. Brandt. 
Lithodes spinosissimus, Brandt ; Bulletin phys.-mathém. de l'Académie de St. 
Pétersbourg, 1849, vii. 173. 
The members of the tribe Lithodea may easily be distin- 
guished by the apparent want of the fifth pair of feet, which 
are very small, and always folded up over the back a 
concealed beneath the carapax. The present species may 
be recognized by the very numerous long sharp spines wW! 
which it is everywhere covered above. 
Hab. Kadjak, ( Wosnessenski.) 
Mus. Acad. Petrop. 
