CRUSTACEA. 37 



ARTHROSTRACA. ISOPODA. 



CIROLANIDAE. 



109. CiROLANA POLiTA (Stimpson) . 



Aega polita Stimpson, Mar. invert. Grand Manan, 1853, p. 41. 



"LOW-WATER MARK OX HiGH DuCK ISLAND " [GrAND MaNAN]. 



Me.— Eastport. 



Mass. — Salem ; near Swampscott ; Cape Cod Bay. 



Georges Bank. 



Low- water to 150 fathoms. 



AEGIDAE. 



110. Aega psora (Linne). 

 Salve-bug. 



Oniscus psora Linne, Syst. nat., ed. 10, 17.58, vol. 1, p. 636. 



" HABITAT I]Sr MARI NoRVEGICO." 



Aega psora Harger, Rept. U. S. commr, of fish & fisheries, pt. 

 6, for 1878 (1880), p. 384, pi. 10, fig. 64. 



On cod, skate and halibut. 40 to 150 fathoms. 



Mass. — Beverly; Provincetown ; off Marthas Vineyard. 

 Gulf of Maine ; Georges Bank. 



111. RociNELA AarERiCAisrA Schioedte and Meinert. 



Rocinela americana Schioedte and Meinert, Naturh. tidssk., 

 1879 (3), vol. 12, p. 394, pi. 10, figs. 16-18. "Ireston Amer- 

 ica SEPTENTRioxALis." Ireston is an error for Trenton. Har- 

 ger, Bull. mus. comp. zool., 1883, vol. 11, p. 98, pi. 3, figs. 3, 3a, 

 and 4, pi. 4, figs. 2, 2a. 



Me. — Trenton. 



112. Syscenus infelix Harger. 



Si/scenus infelix Harger, Rept. U. S. commr. of fish & fisheries, 

 pt. 6, for 1878 (1880), p. 387. "About fifteen miles "north- 



