CERATOPOGON. 227 



fourth of almost equal length. Antenncf pale ycdlow, slender ; their tips 

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

 drical; fi'ora the ninth to the thirteenth elongated, elliptical. Thorax 

 white or yellotcish-r/rei/, with irregular stripes and many points, of a 

 purplish-hroicn colour ; the hinder half api)earing in some aspects pur- 

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

 four brown stripes. Metathorax hlackish-broicn, tcith a yellow border be- 

 neath. Pectus blacJiish-broton, sliinuKj, with a glistening-greyish hue. 

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

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

 and with a limpid sj)ot by the costa, at ttco-thirds of the length ; veins 

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

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

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

 OHS-broxon, with pale yellow knees and yelloioish-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 F(£in. niger, nitens, thoraee pilis nonnullis uigris, alis limpidis, 

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

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

 posticis robustis ; Mas, antennarum plumis apice albo-niteutibus. Long. 

 *-|; alar. 1^-2 lin. 



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

 veins pale brown. Halteres brown, loith tvhite knobs. Abdomen bare. 

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

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

 the autennse glistening-white towards the tips. 



Not rare. (E.) 



53. gracilis, Hal. Ent. Mag. i. 152 {183S). —dorsalis, Zett. D. Sc. 

 3644. 19. "Niger, nitidus, scutellu flavo, plem'is nedibusque luteis, pos- 

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

 alar. 2|- 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 petiolatcd. 

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

 beneath yellowish, except the ti]) ; the base sometimes rather pellucid 

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

 fexcept the base), hind tibife, and posterior coxae, darker; hind tibife 

 ciliated outside. Ungues black. Male. Antenna; with the first joint 

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

 brown outwardly. Abdomen rather incrassated at the tip. Ungues 

 small, equal. Fern. xVntennse blackish-brown, longer by half than the 



