214 KANSAS UNIVERSITY QUARTERLY. 



more extensive, and, indeed, under these conditions, almost any 

 point on the dorsum may be made to look pollinose. The 

 prostigma is brown to black. The bristles of the thorax are 

 represented in figure 3. The third dorso-central bristle is very 

 small and may be absent. 



The legs are brown to black. The only noteworthy feature 

 of the bristles of the femora is at the a])ex of the middle one. 

 Here we find in the female that the usual transverse apical 

 group consists of about four members, of which the one most 

 caudad is much the stoutest ; these bristles in the male are all 

 stouter than in the female, and we find in addition a peculiar 

 structure, viz., a sort of tubercle, situated apicad the transverse 

 group, bearing several short, stout, curved spines closely set 

 and projecting apicad. Anterior tibia has no unusual bristles. 

 The middle tibia of the male, as is so common in this genus, 

 presents something of interest on the anterior surface close to 

 the extensor border which is absent in the female. This is a 

 row of small bristles extending from base to apex. The bristles 

 of the basal half millimeter or so are stout compared with their 

 length — genuine though very tiny spines ; then they become 

 longer and more slender, gradually changing their character al- 

 most to that of hairs. This is almost precisely the arrangement 

 found in Morellia violacea Fabr., the difference being that in the 

 present species the tiny spines of the basal portion of the series 

 are arranged in at least two rows, while in violacea, as far as my 

 material shows, they form but one row. The posterior surface 

 of this tibia bears in both sexes the following : Two bristles in 

 the basal third, one in the apical third very near the flexor bor- 

 der, and either one or two a very little basad the latter and 

 farther away from the flexor border. The hind tibia differs in 

 the two sexes. In the male, we find on the lateral surface near 

 the flexor border a row of about five long bristles, beginning 

 very near the middle of the tibia and extending to the apex ; in 

 the female there is a similar row, but its members are smaller, 

 and there are usually four instead of five. On the same surface, 

 near the extensor border, we find in the male a complete row 

 from base to apex ; the basal members are small, those toward 

 the apex larger ; four or five of the members of this row are 

 much larger than the rest, but it is not always the same bristle 

 which has attained the superior size. The same row exists in the 

 female, but it is much less conspicuous, its members being 



