CERATOPOGOls 7 . 227 



fourth of almost equal length. Antenna pale yellow, slender ; their tips 

 brown ; first joint oval ; joints from the second to the eighth more cylin- 

 drical ; from the ninth to the thirteenth elongated, elliptical. Thorax 

 white or yellowish -grey, with, irregular stripes and many points, of a 

 purplish-brown colour ; the hinder half appearing in some aspects pur- 

 plish-brown, with three white-glistening stripes. Scutellum yellow, with 

 four brown stripes. Metathorax blackish-brown, ivith a yellow border be- 

 neath. Pectus blackish-brown, shining, with a glistening-greyish hue. 

 Wings slightly brownish, appearing whitish when seen on a dark sur- 

 face, with various dark brown spots, limpid at the base and at the tips, 

 and with a limpid spot by the costa, at two-thirds of the length; veins 

 blackish-brown. Halteres white. Abdomen blackish-brown, shining, 

 clothed with white-glistening down ; sutures silvery on each side. Legs 

 blackish-brown; tarsi yellow, their joints with brown tips; fore legs pice- 

 ous-brown, with pale yellow knees and yellowish-white tarsi. 



Eare. In the collections of Mr. Curtis and Mr. Dale. (E.) 



52. copiosus, Winn. ! Linn. Ent. vi. 56. 52. pi. 7. f. 52 (1852). 

 Mas et Foem. niger, nitens, thorace pilis nonnullis nigris, alls limpidis, 

 venis pallide fuscescentibus, halteribus albis fusco-petiolatis, pedibus ni- 

 gro-piceis, tarsis albidis articulis apice obscurioribus, femoribus tibiisque 

 posticis robustis ; Mas, antennarum plumis apice albo-uitentibus. Lon^ 

 l-f; alar. H-2 lin. 



Black, shining. Thorax with a few black hairs. Wings limpid; 

 veins pale brown. Halteres brown, with white knobs. Abdomen bare. 

 Legs piceous-black ; tarsi whitish, their joints darker towards the tips ; 

 hind femora and hind tibiae more than usually stout. Male. Plumes of 

 the antennae glistening-white towards the tips. 



Not rare. (E.) 



53. gracilis, Hal. Ent. Mag. i. 152 (1833). dorsalis, Zett. D. Sc. 

 3644. 19. "Niger, nitidus, scutello flavo, pleuris pedibusque luteis, pos- 

 ticis obscurioribus, alis obscure hyalinis, halteribus albidis." Long. 1^ ; 

 alar. 2f lin. 



Head dingy yellow ; occiput and vertex fuscous, shining. Eyes 

 black in the dried insect. Palpi slender, fuscous, nearly filiform. 

 Thorax above glossy black or piceous. Scutellum yellow. Pleurae and 

 pectus tawny yellow. Wings smoky hyaline; veins rather darker; the 

 tip of the wing a little pubescent, as well as the veins ; second cubital 

 areolet nearly twice as long as the first ; subapical fork petiolated. 

 Halteres creamy-white, yellowish at the base. Abdomen above piceous, 

 beneath yellowish, except the tip ; the base sometimes rather pellucid 

 yellowish. Legs light yellowish, dusky at the joints ; hind femora 

 (except the base), hind tibiae, and posterior coxae, darker ; hind tibiae 

 ciliated outside. Ungues black. Male. Antennae with the first joint 

 dusky yellow ; the pencil at first with a yellowish gloss, but blackish- 

 brown outwardly. Abdomen rather incrassated at the tip. Ungues 

 small, equal. *fem. Antennae blackish-brown, longer by half than the 



