GAMMARIDEA. ggj 



Plate 57, fig. 4 a, male, enlarged ; b, extremity of leg of seventh 

 pair. 



Puget's Sound. 



Length, eleven to twelve lines. The eye and inferior antennae are 

 very unusually large. The scabrous character of the legs distin- 

 guishes the species from the pugettensis ; the longer setae of the pos- 

 terior legs are about two in a set, and they are not longer than the 

 diameter of the fifth joint. The superior antennae do not reach nearly 

 to apex of penult joint of base ; the flagellum is about seven-jointed, 

 and is shorter than the base. 



Orchestia (Talorchestia) gracilis. 



Feminae : — Epimerce grandes, 5tee mx breviores. Antennae, 2dce dimidio 

 corporis valde longiores, setis brevissimis (latitudine antennae duplo 

 brevioribus) ; flagello invito longiore quam basis, articidis paido ob- 

 longis. Antennas hnce basi secundarum triplo breviores. Pedes lmi 

 validiusculi, unguiculati, ungve parvulo, articidis 2do 3tio 4:to 5 to 

 subceqvis. Pedes 2di pavlo breviores, articido penultimo infra promi- 

 nente ; manu apice rotundatd, inargine antico parce excavato et digi- 

 tum minutum versus apicem gerente. Pedes Stii 4:tis longiores. Pedes 

 6 postici pavlo graciles, minute setulosi, articido primo anguste ellip- 

 tico; lmi Qtis longiores 5tis multo longiores setulis in marginibus arti- 

 culi dti numerosis et wquis, in utroque margine triplo brevioribus quam 

 articuli diametrum. 



Maris : — Antennas, 2dce corpore longiores, flagello paulo Imgiore quam 

 basis, ferme 30-articulato. Pedes lmi manu parvuld confecti, oblongd, 

 apice truncatd, digito perbrevi, terminali. Pedes 2di manu grandi, 

 ovatd, infra integrd et arcuatd, spinulosd, digito paulo breviore quam 

 manus, carpo minimo, articulo Stio vix oblongo. 



Female : — Epimerals large ; the fifth pair hardly shorter than fourth. 

 Inferior antennae much longer than half the body, setae very short 

 (half shorter than diameter of antenna) ; flagellum much longer 

 than base, joints a little oblong. Superior antennae about one-third 

 as long as base of inferior. Anterior feet rather stout, with quite a 



216 



