18 Crustacea and Echinodermata of the 



PARTHENOPE PUNCTATISSIMA. Oweil. 



Parthenope punctatissima, Owen ; Zodlogy of Beechey's Voyage, Crust. 81, 

 PI. XXIV. f. 4. 



This is almost certainly a Lambrus, but having been un- 

 able to procure a specimen and examine the characters of 

 the antennae, I refrain from adding to the synonymy. 



Coast of California, (Belcher.) 



Mus. Zool. Soc. ; R. C. S. 



CRYPTOPODIA OCCIDENTALIS. Dana. 



Cryptopodia occiden talis, Dana ; Am. Jour. Sci., 2d Ser. xviii. 430, (wood-cut.) 

 Gibbks, Proc. Elliott Soc. Xat. Hist. Charleston, S. C. i. 36. 



This curious crab is distinguished from all others found 

 on this coast, by the smallness of its posterior four pairs of 

 feet, which are entirely concealed beneath the carapax ; 

 those of the first pair on the contrary are very large, angu- 

 lar, and much longer than the shell. 



Monterey, (W. Rich.) 



Mus. Expl. Exped. 



Tbibh CYCLOMETOPA. 



cancer magister. Dana. 



Cancer magister, Dana; U. S. Exploring Expedition, Crust, i. 151, PI. VII. f. 1. 



SriMi-soN ; Proc. Cal. Acad. Nat. Sci. i. 88. Cancer irroratus, Randall, 1. c. 

 (non Say.) 



The largest of the numerous species found on the Cali- 

 fornian coast. Antero-lateral margin ten-toothed ; teeth but 

 little prominent, with the exception of the posterior one, 

 which is separated from the next by a considerable space ; 

 they gradually diminish in size toward the orbits. Termi- 

 nal segment of abdomen in the male short, with a rounded 

 extremity. Third article of outer maxillipeds somewhat 



