4 Rev. T. R. R. Stebbing on Arctic Crustacea. 



a good species or a very remarkable variety, and quite distinct 

 from Brandt's variety alutaceus^ Miers, on the other hand, 

 in the ' Challenger ' Brachyura, pronounces Stimpson's 

 H. latt'frons to be " very doubtfully distinct from Hyas 

 coarctata,^' though he recognizes Dana's Hyas lyratus from 

 the west coast of America as a very distinct species. 



In 1882 Hoek, among the Crustacea of the ' Willem 

 Barents ' Expedition, describes and figures " Hyas coarctatasj 

 Leach, var.," and lays stress on measurements of the male 

 ehelipeds. But these appear to be far too variable with age 

 and size of specimen to admit of any reliance being placed 

 upon them, and, moreover, as Hansen has pointed out 

 (' Dijmphna Krebsdyr,' p. 235), it is clear that Hoek's species 

 is a true TJyas araneus. Hansen's own conclusions are as 

 follows: — " Specimens from the ' Dijmphna' give the same 

 result as that of Hoek's table of measurements, that the 

 breadth of the carapace in front, compared with its breadth 

 behind, is relatively greater in the small than in the large 

 specimens, just as the breadth in front is in the small specimens 

 greater in relation to the length than in the large individuals. 

 Whether, all things considered, Hyas coarctatus is a valid 

 independent species or only a variety of //. araneus^ appears 

 to me somewhat doubtful, although 1 have inspected a rather 

 considerable number of animals at various ages and from 

 various seas." 



Into how many species the genus Hyas will eventually be 

 divided it is impossible to foresee. Dana's H. lyratus should, 

 it seems, stand by itself. Of the other forms as yet known 

 how happily, sua si hona norint, may all of them live under 

 the common name of Hyas araneus. But to expect that they 

 will do so is Utopian. 



Mr. Bruce's specimens were obtained from off the north 

 end of Kolguev Island at 12 fathoms, and from the western 

 part of the Barents Sea, 76° 17' N., 21° 36' E., at 60 fathoms 

 depth. 



MACRURA. 



Tribe A n M A L A. 



Fam. Paguridae. 



Genus EuPAGURUS, Brandt, 1851. 



Eupagurus puhescens (Kroyer) . 



1838. Pagurus puhescens, Kroyer, Danske Selsk. Skr. Afh. pt. 7, p. 314 ; 

 Kroyer, Conspectus Crust. GroJiilandise, Naturh. Tidsskr. vol. ii. 

 p. 251. 



