MARINE AMPHIPODA IN MICRONESIA — BARNARD 545 



Material: Abbott stations 39-E-5 (1), 41-D-3 (3), 208-C-7 (7); 

 Bayer stations 431 (1), 589 (1). 



Relationship: This species bears comparison to the following 

 species for each of which a distinguishing feature is noted: 



P. cristatus: male gnathopod 2 has 3 palmar teeth near the finger 

 hinge. 



P. lohatus: male gnathopod 2 palm is defined by a tooth. 



P. andamanensis : a poorly known species, needing redescription ; 

 article 4 of male gnathopod 2 not produced. 



P. laevis: the original description and that of Walker (1904) have 

 the male second gnathopodal palm straight, unarmed except for setae; 

 the description of Chilton (1926) has the palm bearing 3 widely 

 separated teeth. 



P. inconspicuus: Pirlot (1938) has a downward produced lobe on 

 the distal edge of article 2 on both male and female second gnathopods. 



P. mangarevae: male gnathopod 1 has a narrow hindlobe on 

 article 5; gnathopod 2 has the process of article 4 obtuse, not acute; 

 article 4 of female gnathopod 2 is more bulbously produced ; however, 

 P. talegus, new species may be the young of P. mangarevae. 

 Distribution: Ifaluk Atoll, Caroline Islands. 



Literature Cited 

 Alderman, A. L. 



1936. Some new and little known amphipods of California. Univ. Calif, 

 Publ. Zool., vol. 41, pp. 53-74, figs. 1-51. 

 Barnard, J. L. 



1955. Gammaridean Amphipoda (Crustacea) in the collections of Bishop 

 Museum. Bernice P. Bishop Mus. Bull. 215, pp. 1-146, pis. 1-20. 



1958. Index to the families, genera, and species of the gammaridean Amphi- 



poda (Crustacea). Allan Hancock Found. Publ. Occ. Pap., vol. 19, 

 pp. 1-145. 



1959. Estuarine Amphipoda. In Ecology of Amphipoda and Polychaeta 



of Newport Bay, California. Allan Hancock Found. Publ. Occ. 



Pap., vol. 21, pp. 13-69, pis. 1-14. 

 1961. Gammaridean Amphipoda from depths of 400 to 6000 meters. 



Galathea Rep., vol. 5, pp. 23-128, figs. 1-83. 

 1962a. Benthic Marine Amphipoda of southern California; families Aoridae, 



Photidae, Ischyroceridae, Corophiidae, Podoceridae. Pacific Nat., 



vol. 3, pp. 3-72, figs. 1-32. 

 1962b. Benthic Marine Amphipoda of southern California; families Tironidae 



to Gammaridae. Pacific Nat., vol. 3, pp. 73-115, figs. 1-23. 

 1962c. Benthic Marine Amphipoda of southern California; families Amphilo- 



chidae, Leucothoidae, Stenothoidae, Argissidae, Hyalidae. Pacific 



Nat., vol. 3, pp. 116-163, figs. 1-23. 

 1962d. South Atlantic abyssal amphipods collected by R. V. Vema: Abyssal 



Crustacea. Vema Res. Ser., no. 1, pp. 1-78, figs. 1-79. 



