ISOPODS OF NORTH AMERICA. 



501 



horgii; Casco Bay, Maine, on P. Ixmalh; West Greenland; North 

 Grecnhind; Baffin Land; East (irccnland. 



Pacific coast localities: Adniinilty Inlet, Piiget Sound, Washington, 

 on Spirontocaris grmnlandica; off North Head, Akutan Island, Alaska, 

 on ^. arcuata,' Straits of Fuca, ]>etween Washington and Vancouver 

 Island, on S. toamsendi; Admiralty Inlet, Puget Sound, Washington, 

 oil' iS. tridens; Washington Sound, Straits of Fuca, Washington, on S. 



I 



Fig. 550. — Phryxus abdominalis (Aftek Sars). o, Leg of male, b, Specimen of spirontocaris 



LILLJEBORGH INFESTED WITH PARASITE. C, MALE (DORSAL VIEW), d, DORSAL VIEW OF FEMALE, e, 



First leg of female. /, Head of male (ventral view), g. Fourth leg of female, h, Ven- 

 tral VIEW of female, i. Last segment of abdomen of female, j, Right part of body of 

 female, k. Same (ventral side). I, Maxii.lipeds. ??(, Fifth to .seve.nth HrniMENTARY legs. 



tridens; off Queen Charlotte Sound, British Columbia, on S. macroph- 

 tliahiui; off Yahwhit Head, Washington, on a,V. laaci'ophthalriia; Iliu- 

 liuk Harbor, Unalaska, on *S\ HueJdeyi; Arctic Ocean on S. gaimardii 

 heleherl (\\q\\)\ Plover Ba}', East Siberia, on S. po/(n'/.'< (Sabine); Alaska 

 on S. poku'h (Sabine); oft' Cape Strogonoff, Alaska, on S. fahridi 



