CRUSTACEA. 



much enlarged; e, leg of seventh pair;/, stylet of second pair; g, ibid, 

 of third pair. 



From the coral reefs, Feejee Islands. 



The flagellum of the inferior antennae is about as long as penult 

 joint of base, it is hairy like the flagellum of the superior pair. The 

 hand of the second pair of feet is naked, excepting a minute tuft of 

 setae on the lower margin near base of thumb. The third and fourth 

 pairs of feet are very slender, and as long as the second. The fifth is 

 about as long as the fourth, and shorter than the sixth. The sixth 

 and seventh have a few setae on the inner margin of the joints, and 

 thick tufts at the posterior apices. The tarsus has a tooth above 

 extremity, and a seta below. 



The stylets extend but little backward of the apex of the abdomen. 

 The first and second pairs have about four short stoutish setae in a 

 series along the abdomen, the upper side of each branch, and three 

 or four at apex, one of which is half as long as the branch. The 

 branches of the third pair are straight and equal, and furnished with 

 longish slender hairs at apex. 



Gammarus brasiliensis. 



Maris : — Epimeroe sat magnan, 5tce Uis rnulto breviores. Antenna lm<B 

 2dis duplo longiores, corpore fere dimidio breviores ; basi paulo bre- 

 viore quam flagellum, flagello multi-artictdato, articidis tramversis, 

 setis numerosis, latitudine articidorum non brevioribus, appendice par- 

 vuld; 2dw basilmarum parce longiores, flagello dimidio basis parce 

 longiore. Pedes lmi parvuli, manu subovatd, infra hirsutd, carpo 

 non breviore; 2di pervalidi, manu subovatd, infra plus arcuatd et 

 dense elongato-pilosd, palmd non excavatd, carpo transverso, infra 

 perangusto. Setce pedum 10 posticorum breves, semilatitudine articuli 

 bti vix longiores; pedes 4 postici subo3qui, articulo Imo perlato. Styh 

 caudales lmi 2di Stiique suhaiqui. 



Feminae : — Pedes 2di parvuli, manu oblongd, subovatd, infra pilosd, 

 carpo vix oblongo, articulo Ztio infra rectangidato. 



Male: — Epimerals large, fifth much shorter than fourth. First pair 

 of antennae twice as long as second, about half as long as body, base 

 a little shorter than flagellum, flagellum consisting of numerous 



