20 Bulletin of the Brooklyn Entomological Society Vol. XV 



Microvelia buenoi new species. 



Winged male: Head with a longitudinal median impressed 

 line. Antennae sender, a little longer than head and thorax con- 

 joined; first segment stoutest, its length subequal to that of the 

 third ; second segment shortest, the third thinnest ; fourth seg- 

 ment longest, nearly fusiform, about equal to the second in thick- 

 ness, its length slightly more than that first and second taken 

 together. Pronotum a little wider than lorlg, with a distinct 

 collum, the posterior margin rounded, the humeral angles promi- 

 nent, and tumid, with a broad transverse flavous line near the 

 anterior margin. Eyes round, black, the diameter of each almost 

 half the distance between them. Head and pronotum velvety 

 black, a few silvery hairs near the anterior margin of pronotum, 

 the silvery hairs forming a rather broad streak about each eye. 

 Body beneath black, the grayish hairs giving a grayish black ap- 

 pearance. Elytra as broad as abdomen, membranous, the ner- 

 vures black and prominent, the cells mostly white. General 

 shape fusiform. Genital segments prominent, the posterior 

 margin of the first above nearly truncate. Legs pilose, black, 

 except coxae, trochanters and basal portions of femora flavous. 

 Bucculse flavous. Posterior tibije practically straight. Length, 

 1.9 mm.; width, .81 mm. 



Winged female: A little larger and more robust than male; 

 hemelytra practically covering abdomen, the posterior tibiae as in 

 male. Pronotum and elytra marked as in male. Length, 2 mm. ; 

 width, .81 mm. 



Apterous male: Fusiform, the antennae reaching slightly be- 

 vond the posterior margin of the thorax. Thorax above divided 

 jjy distinct sutures into two segments, the prothorax about three 

 times as broad as the mesothorax ; posterior margin of both pro- 

 and mesothorax slightly rounded. Prothorax with a transverse 

 row of pits along posterior margin of flavous line. Connexivum 

 rather broad, outer margins slightly rounded. Abdominal seg- 

 ments unequal, the distal one broadest ; a silvery spot, formed by 

 silvery hairs, on each side of the first two and last two abdominal 

 segments. Length, 1.74 mm.; width, .6 mm. 



Apterous female: Not quite so broadly orbiculate as M. 

 borealis Bueno, the prothorax nearly three times as broad as the 

 mesothorax. A silvery spot on each side of the first three and 

 last three adbominal segments and a row on each side on con- 

 nexivum (a spot on each segments). Length, 1.81 mm., width, 

 .65 mm. 



Type, winged male and allotype, winged female, in my collec- 

 tion. Morphotypes, apterous male and female, in my collection. 



