Z PROCEEDINGS OF THE NATIONAL MUSEUM vol.78 



pleural suture the posterior notopleural bristle is slightly removed 

 from the lateral margin of mesonotum and directed upward or 

 mesad, while in the species which have no such abnormal tegular 

 development this bristle is situated close to the lateral margin of the 

 mesonotum and backwardly directed. Of the first group I have seen 

 tegularia Malloch, macrotegularia Malloch, metallica Malloch, and 

 longifacies Hendel. There are also species in which all four vertical 

 bristles are present and others in which but one pair is developed. 



Group LONGIFACIES 



This group has the arista with hairs on the basal fourth or less 

 which are not less than half as long as the width of the third anten- 

 nal segment, the head not less than 1.5 as high as wide when seen 

 from in front, and the frons longer than its anterior width, with 

 only two vertical bristles developed. 



I have three species before me that belong to this group, not one of 

 which I can determine as longifacies Hendel. I give below a synop- 

 sis of the characters of the four species, using Hendel's very full 

 description of longifacies as a basis for distinguishing that species. 



KEY TO THE SPECIES OF EUPROSOPIA 



1. Frons not appreciably over 1.5 as long as Its width at anterior extremity 2. 



Frons over twice as long as its width at anterior extremity 3. 



2. Scutellum with six bristles ; the greater portion of fore femora, and the mid 



and hind femora much less extensively, browned ; basal segment of all tarsi 

 reddish yellow on basal two-thirds, the second segment of hind tarsi 

 reddish ; humeri somewhat retldish ; fore femur with long black bristles on 

 entire extent of the posterodorsal, and the apical half of the posteroventral, 



surface longifacies Hendel. 



Scutellum with four bristles ; all femora fuscous, and grey dusted, very nar- 

 rowly pale at apices ; basal segment of all tarsi yellowish white, remainder 

 of tarsi deep back ; humeri black, densely grey dusted ; fore femur with a 

 full series of moderately long posterodorsal bristles, but without any bristles, 

 only hairs, on the posteroventral surface semiarmata, new species. 



3. Femora largely yellow, browned apically ; anterior margin of dorsum of 



thorax quite noticeably humped between humeri and with rather dense 

 curled yellow hairs on each side at downward curve ; fourth visible abdomi- 

 nal tergite of female without a patch of black hairs in center of anterior 

 margin; fascia over outer cross vein of wing not complete, incon- 

 spicuous omei, new species. 



3. Femora entirely fuscous, grey dusted; anterior margin of thoracic dorsum 

 not visibly humped, and without exceptional adornment of pale hairs; 

 fourth visible abdominal tergite of female with a somewhat triangular 

 patch of erect black bristly hairs in center of anterior margin, the apex of 

 the patch reaching middle of the tergite; fascia over outer cross vein of 

 wing complete and conspicuous grahami, new species. 



