CALIFORNIA STALK-EYED CRUSTACEA. 133 



says Mr. Benedict, " that the genus Pagurus, as now 

 constituted, does not contain a single one of the original 

 species placed in it by Fabricius; but be that as it may, 

 a valid and therefore imperative reason for making the 

 change lies in the fact that Bernhardus was designated 

 as the type of Pagurus by Latreille in 1810 V The old 

 genus Pagurus was divided by Brandt in his work on 

 Crustacea in MiddendorS 's Siberische Reise 2 into sev- 

 eral subordinate sections or subgenera, one of which 

 containing Bernhardus and its allies was called Eupagu- 

 rus or the true Pagurus. Brandt's subgenus Eupagurus 

 was afterwards raised to the rank of a genus with Bern- 

 hardus as the typical species, thus depriving the older 

 genus of its type. Eupagurus must, therefore, give way 

 to the older name. 



The species of the genus Pagurus are very numerous 

 and often difficult to determine. The west coast of 

 North America seems especially rich in these forms. 

 The Albatross collections in museums of the University 

 of California and the California Academy of Sciences 

 have been of especial value to me in studying our species 

 of this genus, and at the U. S. National Museum, 

 through the kindness of Mr. Benedict, I have examined 

 some species from this coast not previously met with. 

 At one place or another I have seen all the species of 

 Pagurus here described. 



A few Atlantic species have been reported from this 

 coast: P. Kroyeri from Puget Sound by Stimpson, and 

 Bernhardus from the north Pacific by Brandt. The 

 Bernhardus as Mr. Benedict suggests (in Hit.) may be 

 aleuticus or alaskensis. 



The genus Pagurus is divided by Mr. Benedict into 

 four subgenera as follows: 



nsid. Gener. Crnst., p. 421. 

 .II, Theil I, p. 105. 



