NO. 1222. ISOrODS OF THE ATLANTIC COAST— lUCJlARDSON. 539 



lat., 73° 56' W. long.; 71° 42' N. lat., 73° W. long.; 66° 33' N. lat., 

 61^ 50' W. long.; circiinipolar. 

 Depth. — Surface to 25 fathoms. 



99. CHIRIDOTEA CCECA (Say). 



Idolcd cceca Say, Jour. Acad. Nat. Sci. Phil. , 1, 1818, p. 424. — Milne-Edwards, Hist, 

 nat. des Crust., Ill, 1840, p. 131. — Guerin, Iconog., Crust., 1843, p. 35. — 

 Verrill, Report U. S. Commissioner of Fish and Fisheries, 1874, Pt. 1. — 

 Harger, Report U. S. Commissioner of Fish and Fisheries, 1874, Pt. 1, 

 p. 569 (275) , pi. V, fig. 22. 



Cldridotea cnrm Harger, Am. Jour. Sci., XV, 1878, p. 374; Proc. IT. S. Nat. 

 Mus., II, 1879, p. 159; Report IT. S. Commissioner of Fish and Fisheries, 

 1880, Pt. 6, pp. 338-340, pi. iv, figs. 16-19. 



Glyptonotus ccccus Miers, Jour. Linn. Soc. Lond., XVI, 1883, pp. 17, 18. 



IIa7)7'tat.—Y\orid'd; New Haven, Connecticut; Long Island Sound; 

 Vineyard Sound; Nantucket, Provincetown, Nahant, Massachusetts; 

 Halifax, Nova Scotia. 



Dej?t h.^Fonud on surface. 



loo. CHIRIDOTEA TUFTSII (Stimpson). 



Jdotea tuffsii Stimpson, Marine Inv. Grand Manan, 1853, p. 39. — Verrill, Proc. 



Am. Assoc, 1873, p. 362, 1874; Report U. S. Commissioner of Fish and 



Fisheries, 1874, Pt. 1, p. 340 (46). — Harger, Report U. S. Commissioner 



of Fish and Fisheries, 1874, Pt. 1, p. 569 (275). 

 Chiridotea hiftmi Harger, Am. Jour. Sci., XV, 1878, p. 374; Proc. IT. S. Nat. 



Mus., II, 1879, p. 159; Report U. S. Commissioner of Fish and Fisheries, 



1880, Pt. 6, pp. 340, 341, pis. iv, figs. 20-23. 

 Glyptnnntvs tuftsii MvESs,, Jour. Linn'. Soc. Lond., 1883, XVI, pp. IS, 19. 



TIalrttat. — Bay of Fund}^; Long Lsland Sound; IVTassachusetts Bav; 

 Casco Bay, Maine; Princes Cove, Eastport; Halifax, Nova Scotia. 

 Depth. — Surface to 25 fathoms. 



42. IDOTEA Fabrieius. 

 analytical key to the species of idotea. 



a. Terminal segment toothed or acute at its extremity. 



h. Body smooth, not tuberculate or rugose. Terminal segment with sides straight 

 and slightly convergent to distal extremity, which is tridentate, with the 

 l><)stero-lateral teeth rounded and much less prominent than median tooth. 

 Epimeral sutures of all the segments extend quite across the segments. 

 Body striped, especially on males, with a median dorsal stripe of a lighter 

 color than rest of body 101. Idotea marina (Linnteus). 



I/. Body rough and tuberculate. Terminal segment rounded off at posterior 

 extremity to median terminal tooth, which is somewhat produced. Epi- 

 meral sutures of second and third thoracic segments do not entirely cross the 

 segments, but allow the rounded postero-lateral lobes of these segments to 

 form a part of the lateral margin. Body not striped longitudinally in 



median dorsal line with lighter color 102. Idotea phoi^phana Harger. 



a'. Terminal segment subtruncate at its extremity 103. Idotea metaUlca Bosc. 



