GAMMARIDEA. g55 



Orchestia (Talitrus) insculpta. 



Maris: — Segmenta cephalothoracis, epimerce, et coxae 'pedum 6 posticorum 

 insculptae, vel lineis et granulis seriatis notatoe. Epimerce latce, 6tis 

 sat breviores. Antennae Imce basi 2darum plus cluplo breviores * 2dce 

 dimidio corporis lotigiores, basi longo et crasso, flagello non longiore 

 quam basis, fere nuclo, articulis vix oblongis. Pedes lmi subgraciles, 

 ungue fere recto. Pedes 2di pervalidi, manu lata, elliptico-subtrian- 

 gidatd, palmd* obliqud rectiusculd, medio emarginatd, digito longo. 

 Pedes 3tii Atis longiores, bti breves, §ti lmi subaequi, Imis brevioribus, 

 setidis brevibus, diametro articuli non longioribns, articuli 6ti ad mar- 

 ginem inferiorem ferme 5 paribus setularum, ad marginem supernum 

 setidis subtilissimis. Styli caudales dense spinulosi, ramis paris lmi 

 am bobus spinulosis. 



Feminae : — Segmenta cephalothoracis laevia, vix sulcata, epimerce et coxae 

 pedum 6 posticorum areolis leviter notatoe. Antennae 2dce dimidio 

 corporis breviores, articulis flagelli transversis. Pedes 2di manu par- 

 vuld fere ellipticd, digito minuto in margine superno affixo, longitudi- 

 nali, apicem manus vix attingente. 



Male : — Segments of thorax and epimerals, and also coxae of six poste- 

 rior legs, sculptured or marked with raised lines and seriate 

 granules. Epimerals broad ; fifth considerably shorter than the 

 fourth. Superior antennae more than twice shorter than base of 

 inferior; inferior pair longer than half the body, base long and 

 stout, flagellum not longer than base and nearly naked, joints but 

 slightly oblong. Feet of first pair rather slender, claw nearly 

 straight. Feet of second pair very stout, subtriangular, palm 

 oblique, nearly straight, emarginate near middle, finger long; third 

 pair of legs longer than fourth; fifth short; sixth and seventh sub- 

 equal, seventh a little the shorter. 



Femcde ; — Segments of cephalothorax smooth, slightly sulcate. Epi- 

 merals and coxae of six posterior legs slightly sulcato-areolate. Infe- 

 rior antennae hardly half as long as body; joints of the flagellum 

 transverse. Feet of second pair with a small hand, which is nearly 



* By palma {palm of the hand) we mean the part of the margin of the hand against 

 which the finger closes. 



