296 H. Richardson — Isopods of the Bermudas. 



joints and reachs a little beyond the middle of the fourth peduncular 

 joint of the second pair of antennae. 



The second pair of antenna? have the first three joints short, the 

 third joint being provided with an exopod, the fourth and fifth joints 

 long and of equal length ; the flagellum is multi-articulate. 



The first thoracic segment has the lateral margins straight, the 

 anterior angles acutely produced forwards. The lateral margins of 

 the second, third and fourth segment are also straight, with the 

 cpimera evident about the middle. 



The fifth and sixth segments have the posterior half of the lateral 

 margin rounded, the epimera evident below. The seventh segment 

 has the lateral margin acutely produced posteriorly, the epimera 

 evident on the posterior margin of the segment within the processes. 

 The thoracic segments are all widely separated from each other by 

 deep lateral incisions. 



The terminal segment of the body has the lateral margin produced 

 backwards in two small spines, between which the posterior margin 

 is widely rounded. The uropoda are double branched, the branches 

 being nearly equal in length and about as long as the basal joint. 



The first pair of legs are subchelate. In the male the carpus is 

 postero-distally produced in a markedly long process, which extends 

 half the length of the propodus, its entire margin being fringed with 

 long hairs. The propodus is elongate, its lower two-thirds being- 

 fringed with long hairs on the posterior margin, the upper third or 

 distal margin being provided with three large spines, the inner one 

 being bifurcate ; the dactylus is long and also fringed with hairs 

 upon its inner margin, and extends half its length beyond the last 

 digital spine, almost touching the carpal process. The ischium is 

 antero-distally produced in a short process. 



The other legs are simple, biunguiculate. 



In the female the carpus of the first pair of legs is not produced in 

 as long a process as in the male. The propodus is shorter than in 

 the male, more triangular in shape, denticulate on its distal margin, 

 with a long, acute, digital spine. The dactylus does not extend be- 

 yond the digital spine. The ischium is antero-distally produced in a 

 process fringed with hairs. 



A number of individuals were taken b} r A. E. Verrill and party at 

 Bailey Bay, Bermudas, in corallines, at low water, and at Harring- 

 ton Sound, in 1S98. Other specimens were collected at the Bermu- 

 das in 1 870-7 by G. B. Goode. 



Type specimens from Harrington Sound in Peabody Museum, Yale 

 University. Cat, No. 3209. 



