24 SMITHSONIAN MISCELLANEOUS COLLECTIONS 



Genus PUGETTIA Dana 



Having secured specimens of two species of Japanese Maioid 

 crabs, referred by De Haan to the genus Menccthius, we Jind them 

 perfectly similar, in all characters which may be considered generic, 

 to the Pugetticc of the North American coast. The range of the 

 genus, therefore, extends throughout the North Pacific. In addition 

 to the characters given by Dana for the genus, we may mention the 

 following : There is no postorbital spine, other than that forming the 

 anterior angle of the hepatic expansion. The pterygostomian ridge 

 is denticulated. There is a small tuberculiform tooth at the exterior 

 base of the first joint of the antennas. The chelopoda are very large 

 in the male. 



The lyrate form of the carapax, with two angular projections on 

 either side, otherwise without spines, is quite characteristic. The 

 body of the female is more swollen above than that of the male. 

 The species are generally very clean and neat for Maioids. and free 

 from pubescence. 



25. PUGETTIA INCISA ' (De Haan) Stimpson 



MencBthius incisus De Haan, Fauna Japonica, Crust., p. 98, pi. xxiv, 

 fig. 3. Adams and White, Voy. Samarang, Crust., p. 20. 



This seems to represent P. gracilis. Recent specimens are of a 

 reddish or chestnut color above, white below ; pincers brown, tipped 

 with white. 



It differs from P. quadridens in the less projecting and much less 

 concave hepatic expansions ; also in the smaller chelopoda of the 

 male. The fingers of the hand are contiguous almost throughout 

 their length. 



It was found on a sandy and weedy bottom, at the depth of 6 

 fathoms, in the Bay of Hakodadi, Japan. 



36. PUGETTIA QUADRIDENS (De Haan) Stimpson 



Mencethius quadridens De Haan, Fauna Japonica, Crustacea, p. 97, pi. 

 XXIV, fig. 2. Adams and White, Voy. Samarang, Crust., p. 20. 



Living specimens are of a sea-green color, with the abdomen 

 speckled with white. The species represents P. Richii of the Cali- 

 fornian coast. 



It was found among sea weeds dragged up from stony bottoms, 

 at the depth of i and 2 fathoms, on the coast of China, near Hong- 



^ Pugettia quadridens (De Haan). 



