18fl2.1 151 



apical setae ; wings brunescent ; legs black. I received a specimen of this rare 

 species from Mr. Billups in August, 1890, which he had bred from Pcedisca 

 sordidana. 



34.— METOPIA, Mgn. 

 Gen. cli — Eyes nude, widely separated in both sexes ; fronto- 

 orbital bristles in a double row at the back, both in males and females, 

 but only in a single row in front in the former ; facial angle oblique ; 

 forehead prominent, and having more or less silvery glitter ; facialia 

 ciliated along the whole or a greater part of their length ; antennas 

 with the second joint short, and the third fully six times as long ; 

 arista bare ; abdomen without discal setse, and mostly spotted ; wings 

 with fourth longitudinal vein bent at a sharp angle, and furnished with 

 a cubital appendix. 



1 (7) (8) Legs black. 



2 (3) Forehead of male coated in front with silvery lacquer ; sides of frontalia 



only, silvered in the female 1. leucocephala, Rossi. 



3 (2) Frontalia of ordinary form in both sexes. 



4 (5) (6) Abdomen with sharply defined triangular spots. ..2. argyrocephala^Mgn. 



5 (4) (6) Abdomen with semilunar or subtriangular spots 3. campestris, Fin. 



6 (4) (5) Abdomen with nearly straight transverse bands 4. amabilis, Mgn. 



7 (1) (8) Legs with pale tarsi 5. rubr if arsis, Ztt. 



8 (1) (7) Legs with red femora 6. forficula, Newport. 



M. LEUCOCEPHALA, Eossi. 



^ . Forehead very prominent, glazed over the whole of its front portion with 

 silvery lacquer, which extends to the roots of the antennae, forming a kind of plate, 

 which is usually divided in the middle by a fine, black, longitudinal line ; the frontal 

 space behind is wide, and of a dull black colour, having an indistinct broad central 

 stripe ; the fronto-orbital bristles are in a double row behind, and are interrupted 

 by the silvery plate emerging in a single row in front of it ; face glistening white, 

 with black reflections ; cheeks with a few soft hairs on their upper part ; facialia 

 ciliated with strong bristles nearly to the top ; palpi black ; antennae black or grey ; 

 arista thickened to a little beyond the middle ; thorax dark grey, with four black 

 stripes and three post-sutural outer dorso-central bristles ; abdomen with white or 

 yellowish reflections, and marked on each of the last three segments with three sub- 

 triangular black spots ; wings with several (5 to 8) small setae along the base of the 

 third vein, apical cross vein much curved ; legs black. 



$ . Forehead less prominent than in the male, and without the glistening 

 plate ; frontal stripe black, extending to the base of the antennae, and wider than 

 the sides of the frontalia, which are silvered on their front parts with white glitter ; 

 it is similar in other points to the male. Not rare. 



M. ARGYROCEPHALA, MgU. 

 Both sexes of this species bear a very strong resemblance to the female of M. 



