Dec. 28, 1888.] 



SCIENTIFIC NEWS. 



651 



two spreading setiferous branches and broad rounded 

 palp. The anterior foot-jaw is 3-jointed, and like the 

 posterior, which is small, bears a large number of 

 plumose setae. 



The swimming feet (fig. 3) have small hooked spines 

 at ends of joints, but no terminal spines besides 



abdominal joint is divided longitudinally, the intervening 

 space being filled with hyaline membrane. The caudal 

 terminations in the female are divergent, in the male 

 less so ; both are terminated by four plumous setre on 

 each side. Colour reddish brown. 



Males and females were both plentiful, and taken by 



Plate VII. 



Fig. 1. Cymbasoma rigidum, n. sp., female, x 250. 



Fig. 2. Anterior antenna of ditto, x 400. 



Fig. 3. First swimming foot of ditto, x 400. 



Fig. 4. Abdomen of ditto, with attached ova and caudal 



the strong spinous seta;. The fifth feet are wanting in 

 both sexes. The abdomen of the male (fig. 4) is 

 4-jointed, that of the female is 3-jointed, the basal joint 

 of the latter being somewhat heart-shaped, The third 



appendages. 

 Fig. 5. First pair of swimming-feel of Aco/itiofihorus 



angulatus. x 400. 

 Fig. 6. Fifth foot of ditto, x 400. 



surface tow-net at all the places visited, Indeed, this 

 species seemed to be more widespread than any other. 



Cymbasoma rigidum, I.C.T., plate vi. In the earlier 

 portion of this paper a ghort description was given pf 



