1908] Bradlcij. — Amphipods of the (icnus Corophium. 237 



setae at apex ; propodus with six or seven transverse rows of 

 overlapping setae, a few scattered setae along the margins, oblong, 

 the palm transverse, convex, unarmed; dactyl longer than the 

 palm, unarmed, a tuft of three setae on the propodus at its base 

 in front. 



Second gnathopods (pi. 12, fig. 30) not chelate, with the pos- 

 terior margin of the merus united to the anterior of the carpus 

 for almost their entire length ; free margin of the merus armed 

 with two rows of setae, but little longer than the dactyl; both 

 margins of the carpus with a few long setae at their apices ; pro- 

 podus about one-fourth longer than the merus and carpus united, 

 its apex obtuse, a few scattered setae along the margins, and a 

 tuft at apex, a row of long setae extending from the base ob- 

 liquely across on one side toward the apex ; dactyl slender, its 

 apex much curved, considerably over one-half the length of the 

 propodus, live teeth on its inner margin. 



First and second peraeopods similar (pi. 12, fig. 31) ; basal 

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

 as long, bearing a few scattered setae ; merus large and dilated, 

 scarcely as long as the tAvo following segnients united, twice the 

 width of the succeeding segments, bearing a few scattered setae, 

 and a tuft at the apex in front; carpus scarcely wider than the 

 propodus : apex of propodus obtuse and not wider than the base 

 of the dactyl, Avliich is simple, slender, of equal length with the 

 pi'opodus. 



Third peraeopod (pi. 12, fig. 32) with the basal joint not very 

 stout, as long as the three succeeding segments united, and two- 

 thirds as l)road as long, with a few setae on each margin; ischium 

 broader than long, a few setae on the front margin ; merus more 

 thaji twice as long as the ischium, scarcely M'idened at the apex, 

 which is irregularly concave, front margin bearing setae, hind 

 margin with a single medial seta and two at its apex ; carpus 

 exceeding the length of the ischium, two-thirds as long as the 

 merus, of ii-regular shape, its base two-thirds the width of the 

 apex of the merus. It bears two rows each of four or five curved 

 spines, and two longer spines at the apex behind, one or two 

 setae on the f I'ont margin ; propodus as long as the merus, three 

 times as long as broad, its front margin convex, the hind margin 



