rSOPODS OF NORTH AMERICA. 



5fi7 



All seven pairs of lcj>.s [)resent. Pleopods wanting- and replaced by 

 tlesh}' ridg-es. Uropoda wanting. Male with all the segments of the 

 thorax distinct. Segments of abdomen fused. Pleopoda wanting. 

 Uropoda absent. 



Branchial parasitc^s. 



BOPYROIDES HIPPOLYTES (Krjayer). 



Bopi/ru!^ Jtippolijti'x Kr0yer, Kongelige Danske ^'idenskabenes Selskabs natur- 

 videuskabelige og niatheinatiske Afhandlinger, VII, 1838, p. 306, (78), pi. 

 IV, fig. 22.— Edwards, Hist. Nat. des Crust., Ill, J 840, p. 283.— Kr0yer, 

 Kongelige Danske Videnskabenes Selskabs naturvidenskabelige og mathe- 

 niatiske Afhandlinger, IX, 1842, p. 262; Voy. en Scand., Crust., 1849, pi. 

 XXVIII, fig. 2.— Stimpson, Proc. Acad. Nat. Sci., Phila., 1863, p. 140. 



Fl(i. 02S.— BOPYROIDE.S Hn'POI.YTES (AFTER SaRS). O, FIRST INCUBATORY' PLATE. 6, PAI.P OF MAX- 

 ILLIPED. C, MaXII.LIPED. (/, HEAD OK MALE (VENTRAL VIEW). C, ANTERIOR PART OK SPECIMEN OK 

 SPIRONTOCARIS POLARIS INFESTED WITH THIS PARASITE. /, LEG. g, ANTERIOR PART OF HEAD (JK 

 KEMALE (VENTRAL VIEW). /(, DORSAL VIEW OK FEMALE, i, VENTRAL VIEW OK FEMALE, j, DoRSAL 

 VIEW OF MALE. 



