MARINE AMPHIPODA IN MICRONESIA — BARNARD 



523 



Technically the specimens should be placed in the genus Hyale but 

 all other features are definitely those of P. hawaiensis, including 

 female second gnathopods with a process on article 2. The only 

 species in Hyale to which these specimens might be keyed is H. iwasai 

 {=H. gracilis Iwasa 1939), which Shoemaker (1956) has suggested 

 might be P. hawaiensis. I concur with Shoemaker's suggestion. The 



Figure 24. — Parky ale hawaiensis (Dana), male, 4 mm., Reish sta. E-62: a, lateral view, 

 less uropod 3; b,c, gnathopod 1; d, gnathopod 2; e, uropod 3. 



only difference in the two forms is the presence of a lateral spine on 

 the ramus of uropod 3 in H. iwasai and a more slender uropod 3; 

 the distal process of article 2 of the female gnathopod 2 also is poorly 

 developed. 



It is necessary to keep in mind that some specimens of P. hawaiensis 

 have a fused inner ramus of uropod 3 and they must be detected in 

 other ways. Shoemaker's analysis of the species is exemplary and 

 should be used as the model for comparison. 



Distribution : Pantropical and warm-temperate. 



Family Dexaminidae 



Genus Dexaminoides Spandl 

 Dexaminoides orientalis Spandl 



Figure 25 



Dexaminoides orientalis Spandl, 1924, pp. 56-59, figs. 21, 22. — Schellenberg, 1928, 

 pp. 653-655, fig. 202. 



Material: Abbott stations 124-D-3 (1), 125-D-3 (3). 

 Remarks: Schellenberg (1928) has corrected several errors originally 

 made by Spandl and has described the mouthparts. 



768-792— 65— -5 



