202 Journal of the Mitchell Society [May 



notiim twice as long as the pronotum, seiitellar portion broad, obtnse ; 

 calcar tectif orm, marginal teeth evident ; pj-gof er of the male broad ; 

 genital plates long, triangular; genital styles small, U-shaped; anal 

 segments elongate, the ventral margins produced into two obtuse 

 processes; sedaegus long, slender, needle-like. 



Color: General color testaceous gray, strongly marked with dull 

 black ; vertex whitish ; posterior and frontal compartments marked 

 with black; frons whitish, this color extended as a broad band across 

 the genre, the proximal end of the fore coxje, the breast plates to the 

 mesopleura ; first segment of the antennae and the proximal end of the 

 second similarly colored ; the distal end of the second segment black ; 

 clypeus black, this color extended as a broad band across the distal end 

 of the coxae to the metapleura ; legs grayish testaceous, more or less 

 clouded with brownish ; disk of the pronotum blackish ; narrow anterior 

 and posterior borders and the carinse testaceous gray ; mesonotum 

 black, the median carina and the scutellar portion gray; fore wings 

 testaceous gray, the veins ochraceous yellow, faintly pustulate, basilar 

 margin blackish fuscous, claval stem black fuscous to the commissural 

 margin which is broadly blackish fuscous where the claval stem joins 

 it, common stem of medius and cubitus blackish fuscous, this color 

 extending along medius and cubitus for a short distance making a 

 definite Y-shaped mark, veins at the apex brownish fuscous ; abdomen 

 black, the pleural pieces and posterior margin of the segments 

 testaceous gray. 



Length apex of head to apex of abdomen 2.10 mm. ; to the tips of 

 wings 3.15 mm. 



Holotype S . Portland, Conn., July 25. 1920. B. H. Walden. 



Megamelus aestus n. sp. 



Figs. 108, 409, 650 



This species may be recognized by its general blackish color with 

 a median pale vitta evident dorsally and distinct genitalia. 



Vertex narrow, strongly produced ; frons much narrowed between 

 the eyes, gradually widened apically ; antennre with the basal seg- 

 ment about as long as the second segment; pronotum a little shorter 

 than the vertex, the intermediate carinae not strongly divergent; 

 mesonotum about as long as the pronotum, the intermediate carinaa 

 not strongly divergent; male pygofer not strongly inflated; genital 



