206 KANSAS UNIVERSITY QUARTERLY. 



scutellum on or close to the margin, and very frequently decus- 

 sating with its fellow of the opposite side ; (4) marginal, the 

 macrochiietie inserted on the margin between the postjugal 

 and the apical ; (5) discal, always small and often absent, in- 

 serted on the dorsal surface of the scutellum, but not on the 

 margin. Of these, the jugal and postjugal are nearly constant, 

 the apical is always present, the marginal is less common, and 

 the discal very often absent. It is noteworthy that, among the 

 Calliphorina% the genera Calliphora , ProtocalUphoro, Phormia 

 and Lucilia all have two marginal scutellar bristles, while 

 Chrysomyia has either one or none. 



Bristles of legs. — Anterior femora : Normal ; all are rather 

 delicate, but stouter toward the apex. Anterior tibij^^e : On lateral 

 surface one bristle at about the junction of the middle and api- 

 cal thirds ; on the mesal surface there are usually no prominent 

 bristles, but in one male four, and in each of the two females 

 two, of the extensor row of small bristles are of sufficient size 

 to catch the eye. Middle femora : On the extensor surface there 

 is only the usual transverse apical group ; the usual row of the 

 flexor border is made up of rather scattered and delicate bristles ; 

 the usual median row of the anterior surface is represented by 

 but one bristle, situated at the middle of the segment. Middle 

 tibise : The usual large bristle of the flexor surface is uot far from 

 the junction of the middle and apical thirds ; on the anterior 

 surface there is one bristle nearly on the same level with that 

 of the flexor surface ; on the posterior surface there are three, 

 two on the flexor half of the surface (situated at the junction 

 of the basal and middle, 'and middle and apical thirds, respect- 

 ively) , and one on the extensor half at a level a little basad the 

 more apical of the other two. Hind femora : Normal, but rather 

 delicate. Hind tibia* : Near flexor border of the lateral surface 

 two or three small, slender bristles, and near the extensor border 

 two or three (in one male, four) ; on the mesal surface only two, 

 both near the extensor border ; on the extensor border the usual 

 preapical. 



Wing is shown in figure 2. The third longitudinal vein has 

 spines at the base only. 



Brauer and Bergenstamm founded the genus ParalucUia on 

 Calli-phora fnlvipes Macq., and give as the only character for 

 separating it from Lucilia that the third longitudinal vein is 



