MARINE ISOPODA OF NEW ENGLAND, ETC. 



341 



have a much more robust baud. Tbe fourth and succeeding pairs of legs 

 (pi. V, fig. 23 ^7) are much as in tbe preceding species but less spiny and 

 with a greater j)roportion of i)bimose hairs. 



Tbe external apical i)late of the opercidum (pi. V, fig. 23 e) is slender 

 and twice as long as broad. Tbe stylet on the second pair of pleopods 

 in tbe males (pi. IV, tig. 22 .s) does not surpass the cilia, is dilated to- 

 wards tbe tij) and obtusely pointed. 



Length O™"" ; breadth 4.5™". The color is usually light reddish brown, 

 speckled with darker, or marked with dark transverse patches, or bands. 

 A specimen obtained during the summer of 1S79, from a clear sandy 

 bottom in 17 fathoms, Stellw^agen's Bank, is thus described from life by 

 Professor Verrill : "Color whitish, more or less speckled with salmon 

 on the sides above, the specks more regular and distinct on the head, 

 some lines and specks of flake-white on the middle of the back above 

 the greenish stomach ; base of telson salmon brown, its posterior half 

 white ; legs marked with salmon." 



Dr. Stimpson's specimen "was dredged on a sandy bottom in 10 

 fathoms oft' Cheney's Head " in tbe Bay of Fundy. It occurs in Long 

 Island Sound, where a specimen was taken by Dr. T. M. Prudden off 

 New London ! in 1872. The species was, however, considered rare on the 

 coast until 1878, when it was taken in considerable abundance in Glou- 

 cester Harbor, ! Massachusetts Bay, in seven to eight and a half fathoms, 

 sand and red algae. It has also been collected at Casco Bay, ! Maine, in 

 1873; at low water in Prince's Cove, ! Eastport, in the Bay of Fundy, in 

 1872, and at Halifax, N. S., ! in 18 to 25 fathoms, sand, September 6, 

 1877 ; a single specimen in each case. Three additional specimens were 

 obtained in 1879, as detailed below. 



Specimens examined. 



Idotea Fabricius. 



Idotea Fabricius, Suppl. Ent. Syst., p. 297, 1798. 



Flagellum of the antennjE articulated ; legs all terminated by a pre- 

 hensile hand; epimeral sutures evident above except in the first thoracic 



