260 U-S. NATIONAL MUSEUM BULLETIN 236 



Maxilla (fig. 104^) with indication of praecoxal endite without setae. 

 Coxal endite small, elongate, with 2 setae. Basal endite better devel- 

 oped, coalescent with strong, curved spine, in addition bearing fine 

 seta. No endopodite. 



Maxillipede chelate, with moderately swollen basis and 1 -segmented 

 endopodite, forming curved digit, as long as basis. 



Leg 1 (fig. 104a) different from that in A. longipes by better devel- 

 opment of basis, which has fine internal spine. Exopodite as in that 

 species, reaching slightly beyond middle of 1st endopodal segment. 

 1st endopodal segment styliform, seta some distance from apex of 

 internal margin. 2nd and 3rd endopodal segments of equal length; 

 3rd with 2 geniculate setae and 1 fine seta. 



The details of legs 2 to 4 appear from figures lOib-d and the 

 setal formula: 



Endopodites of legs 2 and 3 well developed, reaching insertion of 

 distal internal seta of 3rd exopodal segment, that of leg 4 slightly 

 shorter, reaching insertion of proximal seta. 



Exopodite of leg 5 broadly ovate, 1 }^ times as long as wide, attached 

 to baso-endopodite with narrow strip. Internal border convex, spinous. 

 Five marginal setae; innermost seta lengthened. Baso-endopodite 

 reaching halfway along exopodite, apex cut off squarely, with 4 setae, 

 one of which is lengthened. 



Color faded, transparently yellowish. Female carries a sac with 

 8 eggs. 



Remarks. — Ameira minuta has its main area of distribution in the 

 North Atlantic: the Atlantic coast of Norway (Boeck, 1864; Sars, 1906); 

 the Skagerrak coast of Sweden (Lang, 1936, 1948); the Helgoland 

 area of Germany (Klie, 1927, 1950); the Firth of Forth, Scotland 

 (T. Scott, 1903, 1905); Blacksod Bay of County Mayo, Ireland (Far- 

 ran, 1913); and the Dalkey area of County Dublin, Ireland (Roe, 

 1958). The present record seems to be the fkst from the Pacific area; 

 the specimens are smaller than those recorded from the Atlantic (9 

 0.56-0.64 mm.). In the Ifaluk collection it occurs in washings of 

 algae, in a sand sample, and in crevices along the reef edge. In the 

 North Atlantic also, the species has been recorded from a variety of 

 substrata. 



