360 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



than in. the last species, its breadth being to its length as 5.5 to 10, and 

 the depression crossing it is partially interrupted at each side by a tuber- 

 cle which often projects, as seen from above, just behind the basal lobe, 

 forming a shoulder to the large terminal lobe. The stylet on the second 

 pair of pleopods in the males (pi. VIII, fig. 47, s and s') attains about 

 the middle of the cilia. 



Length 10 mm ; breadth 4 mra ; color, as in the preceding, dull, and 

 usually much obscured by adhering dirt. 



A few specimens were collected in Whiting River, near Eastport, Maine, 

 in 1872, which are much more decidedly hirsute than is usual, both on 

 the upper surface and on the legs as well. In other respects they appear 

 to be referable to this species, although the posterior thoracic segments 

 are rather less angulated at the lateral margin. They may be worthy of 

 a variety name hirsutus. 



Dr. Stimpson's specimens were "taken in deep water on sandy and 

 muddy bottoms " in the Bay of Fundy, and this species usually replaces 

 the last in the northern localities. It has, however, been taken as far 

 south as Block Island Sound !, near the eastern end of Long Island 

 Sound, in 18 fathoms, sandy bottom, and in 29 fathoms Vineyard Sound !. 

 North of Cape Cod it is more common. It was dredged in 25 fathoms 

 on St. George's Bank!, at Stellwagen's Bank ! in 20 to 40 fathoms, rocky 

 and sandy bottom ; Casco Bay!, 16 to 17 fathoms mud; Bay of Fuudy !, 

 at many localities, usually on muddy bottoms, and in 16-18 fathoms 

 mud and stones, off Halifax !, Nova Scotia, by the Fish Commission, and 

 in 14 fathoms off Eichibucto, in the Gulf of Saint Lawrence, by Mr. 

 J. F. Whiteaves. The greatest depth positively recorded is 29 fathoms, 

 but it may very likely have come also from a depth of 40 fathoms near 

 Stellwagen's Bank. 



Specimens examined. 



