INSECUTOR INSClTLg*; MENSTRUUS 157 



a few yellow curved and forked scales, and some brown 

 forked scales on the very edge of the occiput. The basal joint 

 of the antennae is brown, with white flat scales, the verticels 

 very full, long and yellow, a dark band at the base of each 

 whorl, the terminal joints dark with light yellow or white 

 pubescence, and a few brown bristles ; the proboscis is more 

 definitely white scaled in the middle than in the female ; palpi 

 long, a broad black basal band, followed by a wide white band 

 reaching nearly to the apex of the joint, a rather narrow- 

 black band involving both sides of the joint, followed by a 

 broad white band extending about two-thirds the length of the 

 penultimate, which here becomes thickened, and some black 

 scales with blue iridescence, and a few yellow scales are found 

 especially on the dorsal aspect, the very apex is dark, the 

 penultimate joint is covered with dark, white and yellowish 

 flat scales and a heavy plume of long yellow hairs and a few 

 white bristles near the apex, the ultimate joint has black and 

 light scales, the plume is not so heavy, and is mostly white. 

 The thoracic marking is like that of the female. On the 

 abdomen the submedian dark spots are well developed, but 

 the terminal segments are mostly white, and the median dark 

 line on the venter is much more pronounced. The ungues are 

 large, on the fore leg the larger is biserrate, the smaller uni- 

 serrate ; on the mid legs they are still unequal, and both are 

 uniserrate ; on the hind legs the ungues are equal and uni- 

 serrate. The wing is scantily scaled, but the general coloring 

 of the female is suggested ; the second posterior cell is much 

 broader than the first submarginal, stem also a little shorter ; 

 cross vein distant a little more than its length. The incrassa- 

 tion of the third vein is more marked than in the female. 



Length : body 8.5 mm., wing 5 mm. 



Dr. Harrison G. Dyar, of the U. S. National Museum, has 

 kindly examined and compared the male genitalia for me, 

 and corroborates by the genitalic characteristics my conclusions 

 from the somatic differences. His report follows: 



"Side pieces about three times as long as wide, uniform, the 

 tip rounded ; clasp with long terminal spine ; apical lobe low, 



