614 



Fig. 4. Phronima dunbari (after Shih, 1991). 



6. Hemiscelus setosus G. Vinogradov, 1990a (Figure 6) 



Five specimens (all females) with length of 4 mm. 



This species is easily distinguished from H. diplochelatus Stewart 

 by the greater length of the posterodistal part of article 5 of pereopoda 

 I and II, at least 2/3 that of article 6; dactyls of pereopoda I and II are 

 greatly pronounced; the distal part of article 2 of pereopod V is uni- 

 formly curved; the dactyls of pereopoda III and IV are hook-shaped; and 

 relatively greater length of the telson. 



Specimens were collected in the Pacific Ocean in the region of the 

 Nasca Ridge at depths of 50-300 mm and near the shores of Australia 

 (Zeidler 1992b). 



7. Scina spp. 



Zeidler (1990) recorded four small species of Scina with length 

 between 1.6 and 3.0 mm (S. curvidactyloides, S. parasetigera, S. hurley i, 

 S. exospina). All specimens were noted by the author as sexually imma- 

 ture females, indistinguishable from juvenile forms No sexually mature 

 specimens have been found. In working with our extensive collections, 

 we also came across numerous examples of very small Scina which had 

 only recently had left the marsupium of the female and had not yet 

 acquired all of the morphological features of the adult form. We will 



