Poa val 
Fig. 1. Macrobrachium dux (Lenz), from Avakubi. Above, ovigerous female, 
largest of four, carapace and rostrum 27 mm. long; below, largest of four immature 
males, carapace and rostrum 38 mm. long. 
Fig. 2. Macrobrachium vollenhoventi (Herklots), from Malela. Male, cara- 
pace and rostrum 50.2 mm. long. 
