203 



as long as thick ; the club somewhat longer than the last two f unicle 

 joints combined, solid, and acute at apex; funicle with moderately long^ 

 verticillate hair, the first joint with four whorls, the following joints 

 with three, the club with similar less distinctly verticillate hair giadually 

 shortening towards apex ; the last funicle joint set with a row of four 

 short, clavate scale-like hairs on the under side, the base of the club 

 with two more. Thorax and wings as in the female, except that the scu- 

 tellum is slightly longer and a little acute at apex. Abdomen a little 

 longer than the thorax, very broadly ovate or nearly circular in outline 

 as seen from above, and very strongly depressed. Face very finely 

 reticulate, mesoscutum more distinctly reticulate than in female, and the 

 basal tergite of abdomen with a comparatively coarser reticulation. 



Length : .69 to .88 mm. 



Coloration distinctly more reddish, especially on the abdomen, which 

 is not black as in the female ; antennae and legs as in the female. 



Described from 6 females, 3 males (type, allotype and 

 paratypes) collected on Eragrostis variabilis at Xnnanr. Pali, 

 Oahu, Oct. 8, 1916 (Swezey and Timberlake) and 2 females, 

 2 males (paratypes) from the same locality, Xov. 12 and 19. 

 1916 (Giifard and Fnllaway). The species is probably para- 

 sitic on Tvionymus insularis Ehrhorn, as the grass on which 

 the para.site was fonnd is commonly infested with this Coceid. 



Xanthoencyrtus laysanensis n. sp. 



Female : Dififering from A', apterus as follows : Head perfectly circu- 

 lar as seen from in front ; the space between the eyes from the antennal 

 sockets to the occipital margin as wide as long, the depression with a 

 rather narrow median ridge on the upper part instead of a triangular 

 raised area ; the ocelli absent. Antennal scape somewhat expanded be- 

 neath and over a third as wide as long excluding the radicle ; pedicel 

 no wider at apex than the following joint ; flagellum distinctly stouter 

 and increasing but very slightly in thickness distad, the relative pro- 

 portions of the funicle joints remaining about the same; club not dis- 

 tinctly wider than the funicle, its middle joint the shortest. Posterior 

 margin of the pronotum somewhat more arcuate, making the mesoscu- 

 tum slightly longer medially. No reticulations on the mesoscutum ap- 

 parent under highest magnification of the Zeiss binocular. 



Length : .90 to 1.35 mm. 



Coloration the same as in apterus, the flagellum rather deeper black 

 and not at all paler at the base of the funicle, the basal tergite of the 

 abdomen somewhat more yellowish at base. 



Male : Similar to the male of apterus with the scape a little wider,, 

 and the abdomen no longer than the thorax and much less circular. 



