141 



There are five teeth on the anterior border of the first 

 peduncular joint of the antennnle, with a sixth smaller outer- 

 most. 



The posterior notch of the pleon is wide and deep. 



The male has two prominent posterior projections on the 

 anterior portion of the pleon. 



The internal ramus of the uropod has three terminal 

 teeth, one larger above, two below. The external ramus is 

 shorter and narrower, with two terminal teeth. 



The body is minutely pubescent, but the hairs are 

 coarser on the pleon and uropods. 



The female of this species has not been identified. 



Cymodoce hamata, i^- ^p- 



Plate iv., figs. 1 to 11. 



Body moderately convex, covered with a furry tomen- 

 tum, which entangles much foreign matter, with longer 

 scattered hairs. It is conspicuously contracted at the seventh 

 thoracic segment. 



The head is evenly rounded and anteriorly very obtuse, 

 with two very obscure median projections. The eyes are pro- 

 minent and subcircular. 



The first segment of the thorax is about as long as any 

 two together of those which follow; these are narrow, pro- 

 minent, and scarcely differ in length. The epimera slightly 

 project outwards; their lower outline, taken together, is very 

 irregular, the individual apices being more or less obtuse ; 

 that of the seventh segment is much shorter than the rest. 



The sides of the anterior part of the pleon project down- 

 wards, much in contrast to that of the seventh thoracic seg- 

 ment, but the antero-lateral angle is subacute : this portion of 

 the pleon bears one small tubercle each side of the median 

 line, whilst the posterior portion has also two tubercles, which 

 are more or less spiniform, and situated on a dome, which is 

 granular : between these two tubercles is a longitudinal de- 

 pression. The posterior notch is wide, with a strong median 

 process, which projects beyond the sides, is obtuse, and 

 slightly turned up or tuberculate at its end. 



The basal antennular joint is large, about twice as long 

 as broad, with the distal notch shallow. There is a small 

 keel on the underside of the second joint. The flagellum 

 has 11 joints. 



The flagellum of the antenna has 16 joints. 

 The epistome is slightly lobulate, the upper lip extern- 

 ally convex. 



The maxillipeds have the plate of the second joint 

 shorter than the joint itself, with the distal spines well deve- 



