23 INSECUTOR INSCITI^ MENSTRUUS 



thorax ; tarsi, apical two-thirds of fore tibiae, and third antennal 

 segment brownish yellow ; fore wings dark grayish brown, 

 with a small clear area at basal fifth ; ocellar pigment red. 



Head nearly 0.9 as long as wide, sides almost straight and 

 parallel, usually very slightly broadest across eyes ; occiput with 

 about three strong, anastomozing lines and several weaker 

 ones ; interocellar bristles small, only a little longer than diame- 

 ter of posterior ocelli, situated well within the ocellar triangle ; 

 one pair of postocular bristles nearly as long as interocellars, 

 all other cephalic bristles minute. Eyes four-sevenths as long 

 as head and three- fourths as wide as their interval. Ocelli 

 forming very nearly an equilateral triangle, posterior pair oppo- 

 site posterior third of eyes and equal in size to anterior ocellus ; 

 ocellar pigment red. Antennae about 2.2 times as long as head ; 

 segment 1 nearly as long as wide ; 2 about three-fourths as 

 wide as long ; 3 a little more than twice as long as wide, sides 

 evenly rounded, not constricted at apex ; 4 nearly as long as 3 

 and about equal in width to it, slightly more narrowed at apex, 

 twice as long as wide ; 5 about 0.8 as long as 4, nearly twice 

 as long as ^yide, and wider at apex than 4; 6 a little longer 

 than 3, about two and one-half times as long as wide; 7 dis- 

 tinctly shorter and broader than 8 ; segments 1 and 2 nearly 

 concolorous with head, 2 a little darker; 3 nearly uniform 

 brownish yellow ; 4-8 blackish brown, basal portion of 4 paler. 



Prothorax about 1.1 times as long as head and about 1.5 

 times as wide as long, suborbicular in form, with sides flat- 

 tened and anterior margin straight; pronotum slightly rugose 

 along posterior margin and with a few indistinct, pale, anasto- 

 mozing lines ; the two pairs of bristles on posterior angles sub- 

 equal, longest, about one-third the length of prothorax; one 

 pair at anterior angles slightly shorter; one anterior marginal 

 and one posterior marginal pair subequal, a little more than 

 half as long as posterior angulars ; a pair near posterior third 

 of lateral margin slightly longer and stronger than about 36 

 other minute, usually paired bristles. Wings of fore pair fully 

 fourteen times as long as width at middle, dark grayish brown, 

 with veins darker and a small clear area at basal fifth; bris- 



