20;] 



as long as thick; tlie club somewliat longer than the last two funiclc 

 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 cjiadually 

 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 nearlj^ 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 reddisli, especially on the abdomen, wliich 

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



Described from 6 females, 3 males (type, allnty])c and 

 paratopes) collected on Eragrodis rariahilis at Xnuaiir. P;ili. 

 Oahn, Oct. 8, 1916 (Swezev and Tiniberlake) and 2 femalo. 

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

 1016 (Giffard and Fnllaway). The species is probably pai'ii- 

 sitic on Trionymus insulans Ehrhorn, as the grass on wliicb 

 tlie ])ara.-^ito was found is commonly infested with this (dcciil. 



Xanthoencyrtus laysanensis n. sp. 



Female : Differing 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; tlagcllum distinctly stouter 

 and increasing but very slightly in thickness di.stad. 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 l)inocular. 



Length: .90 to 1.35 mm. 



Coloration the same as in apterus. tlie fiagellum rather deeper black 

 and not at all paler at the base of the funicle. the bas.'d tergite of the 

 abdomen somewhat more yellowish at base. 



Male: Similar to the male of apterus witli tlie scape a little witler. 

 and tlie abdomen no longer than tlu' tliorax and inucli less circular. 



