216 Annals of the South African Museum. 



TALORCHESTIA CAPENSIS (Dana). 



1853. Orchestia capensis Dana, U.S. Expl. Exp. vol. 13, 2, p. 866, 



pi. 58, figs 3a, b. 

 1862. Bate, Cat. Amphip. Brit. Mus. p. 23, pi. 4, 



fig. 2. 

 1893. Delia Valle, F. u. Fl. Neapel, vol. 20, p. 506, 



pi. 57, fig. 69. 



1906. Stebbing I.e. p. 537. 



1910. id. G-en. Cat. S.A. Crust, p. 458. 



The female of this species has hitherto remained undesci-ibed. 

 Female. First antenna, "1st joint widest and longest, 3rd not much 

 larger than 1st flagellar joint, flagellum shorter than peduncle, 5- 

 joiuted, both peduncle and flagellum very sparsely spinose. 



Second antenna, ultimate peduncular joint not twice as long as 

 penultimate, flagellum not as long as peduncle, 13-jointed, peduncle 

 and flagellum very sparsely spinose. 



First guathopod simple, although the inner apical angle of 6th joint 

 is distinct, finger a little shorter than width of 6th, stout, iinguis half 

 length of finger. 



Second gnathopod, 2nd joint not strongly expanded on anterior 

 margin, apical process of 6th rounded, but not at all curved upwards. 



The following details apply to both sexes : 



First maxilla, inner plate with 2 plumose setae, outer plate with 9 

 spines. Remaining mouth-parts as described below for T. quadri- 

 spinosa. 



Second peraeopod, 7th joint oblong, with a sudden constriction near 

 apex, inner margin proximal to the constriction bisiuuate and slightly 

 concave, unguis ^ length of finger. 



Third and fourth peraeopods, hind margin of 2nd joint with slight 

 setiferous indents. 



Fifth peraeopod, hind margin of 2nd joint slightly crenulate and 

 bearing on distal portion long setae. 



First and second uropods, raini subequal, much shorter than 

 peduncle in 1st, a little longer than peduncle in 2nd uropod. 



Third uropod, ramus and peduncle subequal. 



Telsou rounded, with small apical incision, strongly spinose. 



In the male the finger of the 2nd gnathopod has a semicircular 

 incision at base of inner margin for the reception of the tubercle on 

 palm. 



In a specimen 15 mm. long the palm of 2nd gnathopod has only a 

 very slight indication of the concavity characteristic of the adult $ ; 



