

GAMMARIDEA. gg 3 



rectiusculd; 2di validi, manu laid mbrectangulatd, bad paulo angus- 

 tiore, apice fere recti truncatd, spardm setulosd, palmd non excavatd, 

 angulo infra flniente; articulo ±to transversa, angustismnZ trian- 

 gulate. Pedes Qti 7mique subcequis, 7 mi parce breviores, setis infe- 

 ns paulo sparse, sat brevibus, supernis minutissimis. StyU caudales 

 postici longi, ultra 2dos multo producti. 



Slender, epimerals quite narrow. Eyes' round, small. Superior an- 

 tenna* about half as long as body, first joint not stout, second very 

 long, flagellum little longer than base, setae very short, appendage 

 half shorter than flagellum. Inferior antennae very slender, short, 

 base a little shorter than base of superior pair, flagellum not longer 

 than preceding joint. Anterior feet quite small, hand subovate, 

 back nearly straight; second pair stout, hand broad, subrectan- 

 gular, at base a little narrower, at apex nearly straight truncate, 

 sparsely setulose, palm not excavate and ending below in an angle, 

 carpus transverse, very narrow triangular. Sixth and seventh pairs 

 subequal, the last little the shorter, seta* rather sparse, and shortish, 

 those on upper margin of joints very minute. Last pair of caudal 

 stylets quite long, extending much beyond second. 



Plate 65, ^g. la, animal, enlarged; b, part of flagellum of superior 

 antennae; c, hand of first pair; d, part of leg of sixth pair; e, extre- 

 mity of abdomen, with stylets of first and second pairs. 



From coral reefs of Viti Lebu, Feejee Islands. 



Length, four lines. The head is rather small, as long as broad, the 

 mouth organs not prominent below. The caudal segment oblong, with 

 two or three setae at extremity, nearly as long as the segment. ? The 

 hand of the anterior feet is ciliate below. The third and fourth pairs 

 of feet are remarkably slender. The length of the hand of second pair 

 is one and a half times the breadth. The setae or hairs of the fifth 

 joint of the sixth pair are in three tufts (exclusive of the apical), 

 the tufts but little divaricate, longer than breadth of joint. The tar- 

 sus has a seta below, and another on one side towards apex. 



Gammarus tenellus, Dana, Proc. Amer. Acad. Sci. ; Boston, ii. 212. 



239 



