MARINE ISOPODA OF NEW ENGLAND, ETC. 

 Sjaedmens examined — Continued. 



347 



Locality. 



Bottom. 



When col- 

 lected. 



Eeceived 

 from — 



a o 



Dry. 



Alo. 



1960 

 1961 

 1962 

 1965 

 19C6 

 2153 

 19U8 



Noank Harbor, Conn. 



Fisher's Island 



"Watch Hill, K. I 



Vineyard Sound Mass 



— do 



do. 



Eel-grass 



Sf. 



1975 

 2150 

 1977 



1978 

 1979 



Provincetown, Mass. . . 



...do 



...do 



...do 



...do 



Beverly, Mass 



Gloucester, Mass 



Gloucester, Mass., 



Outer Harbor. 

 Between Boon Island 



and Matinicus Rocks. 



Casco Bay, Me 



Casco Bay, Ham I 



George's Bank 



Bay of Fundy 



Off Halifax, N. S 



Nova Scotia 



Durham coast, England 



L.w. 



L.w. 



Sf. 



Shore 



Eel-grass 



Aug. 28, 1874 



,1874 



Oct. —,1872 



—,1875 



.1875 



Oct. 24,1875 



,1872 



Aug. — , 1879 

 Aug. — , 1879 

 Aug. — , 1879 

 Sept. 4,1879 



Tide-pool 

 Sand, red i 



L.w. 



Sf. 



L.w. (fe 



sf. 



L.w. 



,1878 



,1878 



,1878 



,1873 



__ ig73 



Sept. — i 1872 

 ,1872 



,1877 



—,1877 



St. Vaast, la Hogue . 



U.S. Fish Com. 



....do 



D.C.Eaton.... 

 U.S. Fish Com. 



....do 



..-.do 



Smith &Harger 

 U.S. Fish Com. 



....do 



....do 



....do 



A.E.VerriU... 

 U.S. Fish Com. 

 ....do 



Capt.G.H. Mar- 

 tin. 

 U.S. Fish Com. 

 ....do 



Smith &. Harger 

 U.S. Fish Com. 



....do 



....do 



Kev.A.M.Xor- 



man. 

 Jardin des 

 Plantes. 



2 

 1 



7 

 00 



2 

 00 

 00 

 00 

 10 



8 



2 

 00 



Alo, 

 Alo. 

 Alo. 

 Alo. 

 Ale. 

 Alo. 

 Alo. 

 Alo. 

 Ale. 

 Ale. 

 Alo. 

 Alo. 

 Alo. 

 Alo. 



Alo. 



Alo'. 

 Alo. 

 Alo. 

 Alo. 

 » i 

 Ale. 

 Ale 

 Alo. 



Ala 



Idotea phosphorea Harger. 



Idotea phosphwea Harger, This Report, part i, p. 569 (275), 1874 ; Proc. U. S. 



Nat. Mxis., 1879, vol. ii, p. 160, 1879. 

 Verrill, Am. Jour. Sci., Ill, vol. vii, pp. 43, 45, 131, 1874; Proc. Amer. 



Assoc, 1873, pp. 362, 367, 369, 1874; This Report, part i, p. 316 (22); 



1874. 

 Whiteave.s, Am. Jour. Sci., Ill, vol. vii, p. 218, 1874; Further Deep-se» 



Dredging, Gulf of St. Lawrence, p. 15, "1874." 



Plate V, Figs. 27-29. 



This species may be distinguislied from the others on this coast 

 by the pointed abdomen or pleon. Young individuals sometimes re} 

 semble the young of L irrorata, but may still be distinguished by the. 

 epimeral sutures of the second and third thoracic segments, whicli 

 do not entirely cross the segment, but allow more or less of the poster 

 rior part of the edge of the segment to form a part of the margin of the 

 animal as seen from above. From Synidofea nodulosa it may be distin- 

 guished by the evident epimeral sutures and by the three acute teetli 

 at the base of the pleon on each side, instead of a single obtuse tooth", 

 as in that species. For characters separating it fi^om the other Isopoda 

 of the coast see at the close of the description of the genus. 



The body, especially of the young, is rough and tubercular along the 

 median line and often also laterally. Older specimens are much smoother, 

 losing their large median tubercles but never becoming as smooth as in the 

 ■preceding species. The head is narrowed behind. The eyes are of mod- 

 erate size. The flagellum of the antennje (pl.,Y, fig. 28 a) is shorter than 



