178 BRITISH COPEPODA. 



2. SCUTELLIDIUM FASCIATUM (Boeck). PL LXYIII, fig. 



11 ; and PI. LXIX, figs. 

 19. 



Aspidiscus fasciatus, Norman. Brit. Association Report, p. 298 



(1868). 



Porcellidium fasciatum, Boeck. Oversigt Norges Copepoder, 

 p. 56 (1864). 



Body ovate, abdomen much narrower than the 

 cephalothorax, head and first thoracic segment coales- 

 cent ; segments of the thorax produced backwards in 

 acutely pointed, curved, and imbricated processes. 

 Anterior antennae 9 -jointed, slender, gradually tapered 

 from base to apex ; first, second, and third joints in the 

 female increasing progressively in length, remaining 

 joints very short ; in the male the limb is somewhat 

 flexuous, and hinged between the fifth and sixth joints 

 (PI. LXVIII, fig. 11); the fourth joint is longest, the 

 second somewhat shorter, the first, third, fifth, and 

 sixth still shorter and subequal, the last three very 

 short. The posterior antenna (PI. LXIX, fig. 2) has a 

 long, slender, secondary branch springing from the apex 

 of the first joint, dilated somewhat beyond the middle, 

 bearing three strong lateral set 83, and at the apex five, 

 one of which is exceedingly long ; the terminal setse of 

 the main branch are rather short, geniculated, and 

 minutely hooked or clawed at the apices, and the last 

 joint has two minute file-like or aculeated processes 

 near the extremity. Mandibles and maxillaa very 

 similar to those of the preceding species. Anterior 



