FAM. MENGENILLIDyE 



2. Genus AUSTROSTYLOPS, Lea 



Austrostylops. Lea, Trans. Ent. Soc. Lond. Pt. 4, pp. 5i4-5i6, pi. 66 (igio). 



Characters. — Male. — Head strongly transverse, emarginate bv prothorax; eves large, 

 occupying about two-thirds of the width of the head, coarsely facetted. Oral cavity irregularly rounded ; 



mandibles triangular, wide at base, pointed at tip and 

 not touching each other; maxillae narrow, less trian- 

 gular, apically obtuse, not meeting each other. Antennae 

 six-jointed, with the third, fourth and fifth joints late- 

 rally produced and the sixth elongate, not much shorter 

 than the produced portions of the preceding joints. 

 Mesothorax very narrow in the middle, but with the 

 sides suddenly dilated ; elytra about once and one- 

 fourth as long as the width of the metathorax. Meta- 

 thorax elongate, with the praescutum quadrate; scuti 

 elongate, widest behind the praescutum ; scutellum 

 elongate, anteriorly rounded and rather broadly sepa- 

 rating the scuti, thence obliquely enlarging to base 

 of postscutellum, posteriorly deeply rounding, emar- 

 ginate by the postlumbium; postlumbium membra- 

 nous, concave, as long as wide, more narrowly rounded 

 behind; postscutellum deeply emarginate by postlum- 

 bium, convex and apically rounded. Wings large, 

 apparently seven-veined (to judge from Lea's figure); costa and subcosta united only to about 

 basal third, from which point the subcosta appears as a strong branch; radius complete; a small detached 

 apical vein lies midwa)' between radius and medius; medius (apparently) detached at base; a small 

 detached branch behind this takes a very peculiar direction (according to the figure); cubitus and two 

 anal veins complete, third anal lacking. Legs long and thin. Front coxa;, femora and tibiae of about 

 equal lengths, but the coxa; slightly stouter than the femora, and these than the tibia;; trochanters about 

 one-third the length of the femora, to which they are closely applied; first joint of tarsi about once and 

 one-half the length of second, and about the width of the tibia;, second joint much thinner, third, fourth 

 and fifth slightly decreasing in length. Middle legs apparently much as front ones. Hind coxa; obliquely 

 placed, about four times as wide as long, touching in middle ; femora, tibia; and tarsi rather longer than 

 in front legs, but otherwise much the same. Last tarsal joint armed with two thin equal claws. 



Female unknown. 



Austrostylops gkacilipes, Lea 



Type of genus. 



A. gracilipes, Lea. 



Geographical distribution of species. — Hosts unknown. 

 1. A. gracilipes. Lea, Trans. Ent. Soc. Lond. Pt. 4, pp. 5i5, 5i6, pi. 66 West Australia. 

 (December 21, igio). 



