gg£ CRUSTACEA. 



Irnce corporis longitudine, basi nix breviore quam flagellum, articulo 

 secundo valde longiore quam primus, appendice brevi, 2>-h-articulatd ; 

 2dce paulo breviores, basi parce longiore quam basis lmarum, fla- 

 gello dimidio breviore. Pedes antici parvuli; secundi paris manus 

 dextra validissima, basi late rotundata, apice superno non prominente, 

 rectangidato, digito immobili longo, crasso; manus sinistra parvida, 

 ciliata, angusta, acuminata. Pedes 6 postici subsetosi. Styli posU- 

 riores longissimi, setidosi, primis vet secundis fere duplo longiores. 



Slender, epimerals narrow. Eyes round. Antennae very slender; 

 superior as long as body, base scarcely shorter than flagellum, 

 second joint much longer than first, appendage short, three to five- 

 jointed; inferior pair a little the shortest, base a little longer than 

 base of superior pair, flagellum half shorter than base. Anterior feet 

 quite small. Eight hand of second pair very large, broadly rounded 

 at base, upper apex not projecting, rectangular, immoveable finger 

 long and stout; left hand very small, narrow and narrowing to 

 apex, ciliate. Six posterior feet subsetose. Posterior stylets very 

 long, nearly twice as long as either of the other pairs. 



Plate 66, fig. 6 a, animal, enlarged; b, left hand of second pair; c, 

 part of flagellum of superior antennae. 



Singapore ; brought up with coral, in ten feet water. 



Length, nearly three lines. This species has more slender antennae 

 than the following; the flagellum of the inferior pair is short; the large 

 hand is very broadly rounded at base ; the small hand narrows to 

 apex, instead of being truncate. The setae of the six posterior legs 

 are in a few uneven tufts, and at apex of joints. The second joint of 

 base of superior antennae is much more than twice the length of the 

 third. The hairs of the flagellum are as long as three diameters of 

 the organ. The large hand is naked, except one or two minute setae 

 at the upper apex. The part of the hand with which the finger arti- 

 culates is not at all raised, and the upper angle of the hand is rectan- 

 gular. The preceding joint is very narrow and is much prolonged 

 downward, close to the hand; the next preceding is prolonged upward, 

 and also clasps the base of the hand, projecting above the following. 

 The third and fourth pairs of legs are similar, slender, subequal. 



G. (Msera) validus, Dana, Proc. Amer. Acad. Sci., Boston, ii. 212. 



