577 



base of costa and ending at apex of R, covering half the radial cell 

 longitudinally; posteriorly it is bounded by the claval suture and apical 

 portion of the cubitus, another black mark along the hind margin of 

 clavus. The white portion opaque with waxy secretion. Wings hyaline, 

 fuscous, with brown veins. 



Medio-ventral edge of pygofer produced into a flat process longer 

 than broad with the apex rounded, the process turns dorsad and lies 

 between the bases of the styles, lateral margins of pygofer straight; 

 anal segment long, broadest at apex where anus is situated, apex produced 

 into two short, broad spines turned ventrad; genital styles spatulate, the 

 inner margin near the base produced into a short, strong spine; on the 

 outer margin a little more distad there is a slender, curved process 

 with blunt apex. The apical margin near the inner corner is produced 

 into a strong, flat spine turned inward; aedeagus large, jointed in 

 middle, but not dissected out. 



Female. Length 2.7 mm., tegmen 4.6 mm. Similar to male. Genitalia 

 including the seventh sternite (subgenital plate) dark brown. The hind 

 margin of the seventh sternite produced into a quadrate process, the base 

 of which is slightly broader than apex and the apical corners rounded. 



Described from two males and six females from Tutuila, 

 Samoa (Kellers, April to August). Type No. 1016. This 

 species is very near to P. vitiensis, which differs in having 

 the spine on the apical margin of styles very small, the styles 

 narrower and the apex of anal segment not produced into 

 such curved points. The females of these two species appear 

 to be alike. 



Lamenia caliginea Stal. Pigs. 13, 13a. 



This species was originally described from Tahiti, but I 

 have not seen specimens from that locality. The long series 

 from Tutuila and Niiie (Savage Island) agree in all the 

 characters described. I figure the male genitalia and the hind 

 margin of the subgenital plate of female. 



RlCANIIDAE. 

 Plestia kellersi sp. n. Pig. 4. 



Male. Length 4.4 mm., tegmen 8 mm. In venation and structure 

 this is typical of the genus. 



Anal segment about as broad as long, lateral margin rounded, anus 

 near apex; genital styles subparallel sided to near apex, flat, the apical 

 inner corner rounded, the outer produced into a point, the style looking 

 like the head of a bird with a large neck; aedeagus short and broad, 



