128 t'^'-'y- 



unarmed, except with one or two bristles at the base of the third vein. Rare ; 

 I have only seen two examples, which were found by the Eev. Mr. Bloomfield, at 

 Guestling, near Hastings. 



9.— BIGONICHETA, End. 

 Gen. cli. — This genus is closely allied to Thriptocera, but differs 

 by having the eyes slightly pubescent ; the arista twice elbowed, all 

 three joints being of nearly equal length ; the cheeks setigerous ; the 

 abdomen with setae on the disc, as well as on the margin of the seg- 

 ments ; the wings with the fourth longitudinal vein bent at an angle 

 (not curved), and the outer cross vein placed nearer to the inner one 

 than to the angle of the fourth longitudinal vein. Other characters 

 as in Thriptocera. 



B. SPiNiPENNis, Mgn. 



Palpi red ; antennoe black, with the third joint a little rufous at the base ; 

 cheeks ciliated with bristles, which extend quite to the bottom, but are not seated 

 on the edges of the facialia ; thorax cinereous, marked with four longitudinal black 

 lines, the iimcr pair being narrow and rather close together ; abdomen grey, with a 

 rather sinuous black band on the hinder part of each segment ; legs black, with the 

 coxffi tinged with red ; wings with the first, third, and fifth longitudinal veins seti- 

 gerous. Not common ; Mr. Fletcher, of Worcester, sent me a specimen some years 

 ago, which was bred from Coccyx strobilella ; I captured one near Ulverstone, Lan- 

 cashire, in 1886, and Mr. Billups sent me one for examination, which he had taken 

 in his garden at Peckham. I believe that this species is only a variety of B. 

 setipennis. Fin., as Meigen makes the chief difference to consist in the colour of the 

 palpi, and many years ago I obtained two continental specimens from Herr Kowarz, 

 captured at Asch, in Bohemia, which were named -B. setipennis, and which had the 

 ends of the palpi red. 



10.— ACTIA, Dsv. 

 This genus, like the last, is so closely allied to Thriptocera, that I 

 think they should both be considered only as subgenera. As in 

 the parent genus, the arista is bent and has the second joint a good 

 deal elongated ; the veins of the wings are also setigerous, and the 

 form, size, and colour of the body are very similar to those of the 

 Thriptocera. The characteristic feature in Actia is the want of the 

 apical cross vein in the wings, in which respect it resembles the genus 

 Roeselia, Dsv., with which it w-as confused by Meigen, the Thriptocera 

 frontalis, Mcq., being the same as Roeselia Lamia, Mgn. 



A. FBONTALIS, Mcq. 



Palpi piceous ; antennae black ; thorax grey, and indistinctly striped ; scutellum 



grey ; abdomen shining black, with the front margins of the second, third, and 



fourth segments surrounded by a narrow white band, interrupted in the centre, so as 



to leave a longitudinal black stripe ; legs nigrescent ; wings with the first (auxiliary 



