38 AXEL OHLIN, ARCTIC CRUSTACEA. 



The fifth joint of the fifth and sixth pairs of pereiopods 

 relatively somewhat longer than in the preceding species and 

 a little emarg-inated along the anterior (exteriör) margin. 



Operculum of the usual structnre and appearance. 



My specimens were all females. 



Length 5.8 mm., breadth 2 mm. 



Tribe Epicarida. 



Fam. Bopyridae. 



Phryxus Rathke 1843. 

 Bopi/rus KrÖYER, Ueiniarthrus GlARD & BONNIER. 



Phryxus abdominalis (Kröyer). 



1840 — 41. Bopyrus abdominalis Kröyer, Bopyrus abdominalis; Xa- 



uirh. Tidsskrift, Bd 3, p. 102, 289, tab. 1—2. 

 184.5. Phryxus Hippolytes Rathke, Beiträge zur Fauna Nor- 



\ve.sens; 1. c. p. 40, tab. 1, figs. 16 — -17, tab. 2, figs. 



1—10. 

 1846. Bopyrus abdominalis Kröyer, Voy. en Scand. etc. pl. 29, 



figs. 1 a — u. 

 1898. Phryxus abdominalis G. O. Sars, Isopoda, p. 215, pls. 



90, 91. 



This species is represented in the collections only by one 

 coiiple ($ + d") from 



stat. 35 (exp. 1898) lat. 80 15' N., long. 33 10' E., White Maud 

 (Xow Island), deptli 40—50 m., rocky l)Ottom, 18 VIII (whost 

 unknown). 



Distribution: West Greenland (Kröyer, Hansen), North 

 Greenland (Ohlin), Grinnel Land (Miers), Baffin Land (Ohlin), 

 Atlantic coast of Xorth America (Harger), East Grreenland 

 (BucHnoLz), British Isles (Sr. Bate & AVestwood), Cattegat 

 (Meixert), Xorway (Sars), Spitzbergen (Sars), Nova Semla 

 (Stuxberg), the Kära Sea (Hansen). 



It is, without doubt, to l)e considered as circumpolar. 



Greatest length of female 9 mm. 



