I{i08] Bradley. — AntpJiipods of the Genus Corophium. 233 



propodus as loii^' as tlie nieriis and carpus united, its apex trun- 

 cate, an oblique row of lon<i' setae on one side, which, being on 

 the reverse side, does not appear in the figure, about six groups 

 of setae on the front margin, four on the posterior, with a short 

 row of long setae at the base ; dactyl stout, a little under one-half 

 the length of the pi'opodus, being equal in length to the width 

 of the. basal joint, four teeth on its inner margin. 



First and second peraeopods similar (pi. 10, fig. 14) ; basal 

 joint as long as the three following united, half as wide as hmg, 

 a few short setae on its anterior margin and a number of long 

 setae near the apex of its posterior margin: ischium liroader than 

 long, less than one-half the length of the merus; merus large and 

 dilated, one-third longer than the two following segments united, 

 twice the width of the succeeding segments, scattered setae along 

 its margin and a tuft at apex in front ; carpus wider than long, 

 wider than the propodus and one-half as long; apex of propodus 

 not wider than the base of the dactyl : dactyl simple, of equal 

 length with the propodus. 



Third peraeopod (pi. 10, fig. 15) with the basal joint stout, 

 as long as the two succeeding segments united and two-thirds as 

 broad as long, fringed with a few setae on each margin-, ischium 

 broader than long, a few setae on the outer margin ; merus nearly 

 one-half longer than the ischium, wider at the apex than base, 

 apex squarely truncate, margins with a few setae ; carpus equal 

 in length to the ischium, pear shaped, the base a little more than 

 one-third the width of the apex of the merus, bearing two rows 

 each of about five tooth-like spines, and two or three longer spines 

 at the apex of the hind margin, a tuft of hairs on the front edge; 

 propodus as long as the merus, four times as long as broad, 

 slightly arced, bearing a few small setae and near the apex two 

 small teeth on the hind margin and a bunch of longer setae at 

 the apex of the front margin; dactyl simple, one-half as long as 

 the propodus. 



Fourth peraeopod (pi. 10, fig. 16) with the basal joint stout. 

 as long as the three succeeding segments united, about one-half 

 as broad as long, fringed with a few setae on each margin; 

 ischium broader than long, a few setae on the front margin, 

 merus twice as long as the ischium, slightly widened at apex 



