Fig. 16. A. intermedius . Variation in morphology of tip of endo- 

 pod of second pleopod. A-H, ventral views. From Williams (1970). 



7(6) Antenna 2 slightly longer than body. Pleopod 1 distinctly 

 shorter than pleopod 2, division of distal and proximal 

 segments incomplete (Fig. 17B) . Caudal process of pleopod 

 2 rounded, not well -developed (but clearly present), and 

 lacking associated hooks and setae; cannula and subequal 

 mesial process extending beyond caudal process (Fig. 17D, 

 E) ; shape of endopod and proportions of segments as in 

 Fig. 17C. Rami of uropod linear, narrow and subequal in 

 length to each other (endopod only slightly longer) (Fig. 

 17F) : A. attenuatus 

 Antenna 2 usually shorter than body but sometimes subequal. 

 Pleopod 1 subequal in length to or slightly longer than 

 pleopod 2, division between distal and proximal segments 

 more or less complete (Figs 18B, 20A-H, 21B) . Caudal pro- 

 cess of pleopod 2 distinctly developed, large, terminating 

 in prominent apex, usually with several fine comb-like struc- 

 tures on dorsal surface and some lateral setose processes; 

 cannula and mesial process usually not extending distally 

 beyond caudal process (Figs 18D, E, 19A-J, 21D, E, 22A-F); 

 shape of endopod and proportions of segments more or less 

 dissimilar to Fig. 17C. At least endopod of uropod lanceo- 

 late, distinctly longer than exopod (Figs 18F, 21F) 



A. raoovitzai 8 



24 



