1891.J 129 



branch), third, and fiflh veins armed witli bristles. I am not aware that this species 

 has yet been found in Britain, but I have described it from continental specimens, 

 so as to render the group of T/iriptoceraffe, Dcsv., more comjilcte. 



11.— PLAGIA, Mgn. [158] 



Gen. c7i. — Middle-Bized nigrescent species, with the outer cross 

 veins of the wings extremely oblique. Eyes in some species hairy, in 

 others bare ; widely se[)arated, and with a double row of orh it o -frontal 

 bristles on the frontalia in both sexes ; antennsD with the second joint 

 elongated, it being from one-half to two-thirds of the length of the 

 third joint ; arista with the second joint slightly prolonged ; facialia 

 unarmed ; cheeks more or less deeply ciliated by a continuation of the 

 orbito-frontal bristles, which in some species is prolonged quite to the 

 epistome ; wings with one or more of the veins setigerous, and with 

 a cubital appendix ; fore tarsi of the males with the last joint provided 

 with long claws and bristles. 



Eondani divides this genus or group {PlagidcB, Dsv.) into three 

 subgenera, viz., Gi/rtoplilcBha, Blepharigena, and Plagia, the first, which 

 has the eyes hairy, and the cheeks ciliated quite to the epistome, may 

 be looked upon as a well marked genus, but the distinctions between 

 the other two are so slight as not to be worth notice ; Blephnrigena 

 only differing from Plagia by having the cheeks rather more deeply 

 ciliated, and the middle abdominal segments with discoidal seta?, which 

 characters I find to be very variable. 



1 (2) Eyes hairy {Cyrtophla;ba,^nA) 1. ruricola, Mgn. 



2 (1) Eyes bare. 



3 (-i) First and third veins setigerous 2. ruralis, Fin. 



4 (3) Third vein only setigerous. 



5 (fi) Antennae wholly black 3. trepida, Mgn. 



6 (5) Antennae with first two joints testaceous 4. curvinervis, Ztt. 



P, RUBICOLA, Mgn. 

 Eyes hairy ; palpi yellow ; antennte with the first two joints testaceous, and the 

 third black, the second joint nearly as long as the third ; cheeks ciliated quite to 

 the epistome ; thorax black, covered with light grey tomentuni, and having four 

 longitudinal stripes ; abdomen black, with wide, irregular, grey, transverse fascia, 

 expanded on the sides of the segments, no setse on the middle of the second and 

 third rings, but having the median marginal spines placed at some distance from the 

 edge ; legs black ; wings with the third longitudinal vein ciliated from the base to 

 the little cross vein ; cubital appendix short. I have not seen a Britisli specimen of 

 this species, but Walker has included it among his TachincB, the description being, 

 however, very vague. 



P. KUllAHS, Flu. 



Eyes bare, ])alj)i black with yellow ends ; autenna' black, with the third joint 



