.146 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Uropods biramous; terminal pair projecting beyond the 

 others, rami armed dorsally and apically with groups of spines ; 

 peduncle with group of spines on upper apepc. Peduncles of 

 first and second pairs with a long, curved, claw-like projection 

 distally, extending beneath the rami. Telson broader than long, 

 apex rounded, undivided, postero-lateral angles with a tuft of 

 spines in front of which is a row of three or four short spines. 



Fourth and fifth abdominal segments provided with a group 

 of short spines near posterior margin at either side of middle 

 line. 



The color of this species is highly characteristic even in 

 alcoholic specimens in which the head, body segments, the coxal 

 plates especially in the proximal region, and the basal joints 

 of the posterior pereiopods, are marked with chocolate brown 

 granules. These markings on the body are usually in the form 

 of broad transverse bands which may enclose irregular lighter 

 areas. There is much variation in the amount of pigmentation. 

 The eyes of alcoholic specimens are black. 



Length 13 mm. 



Distribution: east coast of North America from New Eng- 

 land to Labrador; off New London, off Stonington, off Saybrook, 

 Noank, Connecticut ; off Race Point ; Fishers Island, 42 fathoms ; 

 Long Island Sound, 50 fathoms. 



This is one of the most abundant of the Amphipoda of the 

 New England coast; it is especially common on muddy bottoms. 

 It occurs on the surface and, according to Smith, to depths of 

 150 fathoms. 



AMPHITHOID.E. 



Interantennal lobes not very prominent. 



Fourth coxal plate not excavated behind ; fifth with a broad 

 front lobe as deep as the preceding. 



First antennae with third joint short; accessory flagellum 

 wanting or small. 



Lower lip with principal plates having a deep notch in front 

 forming a broad sinus. 



Gnathopods not simple, second usually larger than the first 

 and larger in the male than in the female and differently shaped. 



