MAEINE ISOPODA OF NEW ENGLAND, ETC. 



381 



distally, with a notch at the external angle ; the outer ramus is slender 

 and tapering, slightly surpassing the inner. 



Length of large specimens 32 mm , breadth 10 mm , but usually smaller; 

 22 mm long, 7 mm broad. The ground color in life is yellowish, with reddish 

 brown on the anterior margin of the head and on the posterior margins 

 of the segments, especially in the dorsal region, where the segments are 

 also marked with black dots. In life the body is somewhat translucent 

 in the thinner parts. In alcohol the translucence disappears and the 

 color fades to a nearly uniform yellowish or buff with black dots. 



This species was described by Stimpson from Charleston, S. C. Most 

 of the specimens in the collection are from Vineyard Sound !, where it 

 occurs sometimes in great abundance, and is common especially during 

 the winter. It is found swimming about in shallow water, and may be 

 taken in a scoop-net, and is found also in lobster-pots. It was dredged in 

 45 fathoms off Block Island ! , near the eastern end of Long Island Sound, 

 in 1874, but has not yet been found north of Cape Cod. 



Specimens examined. 



Cirolana polita Harger (Stimpson.) 



JE(ja polita Stimpson, Mar. Inv. Grand Manan, p. 41, 1853. 

 Liitken, Vidensk. Meddel., 1859, p. 77, 1860. 

 Verrill, Am. Jour. Sci., Ill, vol. v, p. 16, 1873. 

 Conilera polita Harger in Smith and Harger, Trans. Conn. Acad., vol. iii, pp. 3 r 



22, 1874. 



Verrill, Am. Jour. Sci., Ill, vol. vii, p. 411, 1874. 

 Cirolana polita Harger, Proc. U. S. Nat. Mus. , 1879, vol. ii, p. 161, 1879. 



This species so closely resembles the preceding, that a full description, 

 would be little else than a repetition of that given above. It appears, 

 however, to differ constantly from the form already described, by its 

 somewhat more elongated and cylindrical body ; in the eyes, which are 

 " elongate trapezoidal in shape, narrowest anteriorly," and in the tip of 

 the telsou, which is regularly rounded or slightly pointed at the tip with- 

 out any truncation, much less any emargination, and is not at all grooved 

 above. 



Length 25 mm , breadth 6.5 mm ; color much as in the preceding species. 



Dr. Stimpson's specimens were "found on the fine sands at low-water 

 mark on High Duck Island," in the Bay of Fundy, and the specimens 

 that I have examined are from Cape Cod Bay ! ; from near Salem !, Mass. ; 



