24 DISCOVERY REPORTS 



one-third of the abdominal length from the distal end (Fig. 4 //). At the posterior end 

 of the abdomen there are three pairs of postero-lateral spines increasing in length from 

 the outer to the inner, and six terminal spines which increase in length from the inner- 

 most pair outwards. The longest terminal spine is about half the length of the longest 

 postero-lateral. 



a, dorsal aspect ( x 20) ; 



b, lateral aspect ( x 25) ; 



c, antenna ( x 65); 



Fig. 4. First Calyptopis. 



d, mandibles ( x 335) ; g, telson ( x 70) ; 



e, masticatory lobes of the first maxilla ( x 315); 



/, second maxilla ( x 70); h, first thoracic (limb^ x 70. 



