ZOSIME. 15 



three following pairs 3-jointed. Fifth pair small, 

 2-jointed. 



1. ZOSIME TYPIOA, Boeck. PL XXXIX, figs. 112. 



Zosime typica, Boeck. Nye Slaegter og Arter af Saltvands- 

 Copepoder, p. 14 (1872). 



Female. Body robust, truncated in front; no 

 distinct separation between thorax and abdomen, head 

 small, coalescent with first thoracic segment ; rostrum 

 short, thick, and squared at the apex, which bears two 

 small hairs ; abdomen but little more slender than the 

 cephalothorax, tail-segments much narrower than 

 the last abdominal ring. First two joints of the 

 anterior antennae large and nearly equal, each of them 

 equal to the united lengths of the four following joints ; 

 all except the first joint densely clothed on the outer 

 margin with stout, strongly plumose hairs (fig. 3). 

 Second pair of antennse (fig. 4) 3-jointed ; basal 

 joint about as long as the two following, and giving 

 origin to a large triarticulate secondary branch ; both 

 branches plentifully provided with strongly plumose 

 spine-like setae. Mandible short, broad, and strongly 

 toothed (fig. 5) at the extremity ; basal joint of the palp 

 produced internally into a digitiform process (a). 

 Maxillae composed of a broad main segment (fig. 6), 

 with three or four small setiferous digits. Second 

 foot-jaws (fig. 8) having three apical seta3, one long 

 and plumose, the other two small. The two joints of 

 the inner branch of the first foot are of equal length ; 



