Fig. 22. A. vaaovitzai austratis. Variation in morphology of tip 

 of endopod of second pleopod. A-F, ventral views. From Williams 

 (1970) . 



9(6) Antenna 2 usually shorter than body length. Proximal pro- 

 jection on palm of propodus of peraeopod 1 typically with 

 tooth-like seta (Fig. 23A) . Mesial process of pleopod 2 

 usually long and not very wide; cannula of moderate width 

 (Figs 23D, E, 24A-G) ; endopod shape and/or proportions of 

 segments as in Figs 23C, 25A-J; proximal segment of exopod 

 frequently with marginal setae (Fig. 23C) . Uropods mostly 

 subequal in length to telson. Both telson and uropods only 

 moderately setose laterally (Fig. 23F, G) (Table 2): 



A. fovbesi 

 Antenna 2 usually subequal in length to body. Proximal pro- 

 jection on palm of propodus of peraeopod 1 with long stout 

 seta (never a tooth-like seta) (Fig. 26). Mesial process 

 of pleopod 2 usually short and wide, cannula very wide with 

 recurved outer lip (Figs 27C, D, 28A-H) ; endopod shape and 

 proportions of segments as in Fig. 27B; proximal segment of 

 exopod without marginal setae (Fig. 278). Uropods distinct- 

 ly longer than telson and both telson and uropods very 

 setose laterally (Fig. 27E) (Table 2): A. obtusus 



10(2) Body of endopod and associated terminal processes of pleopod 

 2 arranged in spiral fashion so that 'ventral' groove 

 actually lies dorsally (Fig. 29C, D, E) ; cannula not 

 visible; endopod shape and proportions of segments as in 

 Fig. 29C. Endopod of uropod shorter than peduncle (Fig. 

 29F) : A. montanus 

 Body of endopod of pleopod 2 not spirally arranged although 

 some torsion may be displayed by terminal processes (i.e. 

 not as indicated in Fig. 29C, D, E) ; cannula (at least tip) 

 visible from ventral or dorsal view; endopod shape and 

 proportions of segments more or less dissimilar to Fig. 

 29C. Endopod of uropod typically longer than or subequal 

 in length to peduncle 11 



30 



