CEKATOPOGON. 229 



mora with one spine; hind femora with three spines; luignes short and 

 slender. 



Not rare. (E.) 



57. brachialis, Hal. Ent. Ma<(. i. 152 (1833). Mas, " niger, 

 nitidus, antenuis puberulis fL^vidis, alis nudis fusco-hyalinis, halteribns 

 apice nigvis, abdoniine basi thivido, pedibus hiteis, fenioribus apice uigris 

 anticis subtiis spinulosis. Long, li; alar. 2| lin. 



" Male. Shining black. Face piceous. Proboscis short and stout. 

 Palpi nearly tilitbrm, dusky yellowish. Antennte dusky yellowish ; the 

 intermediate joints simply pubescent, but the short joints not so strongly 

 separated as in the other species of this genus, forming a nearly linear 

 flagellum. Thorax very large and convex. TF'uigs smoky hyaline, naked, 

 with pale brown veins ; second cubital areolet nearly three times as long- 

 as th'fe first. Halteres yellowish, with black tips. Abdomen pitchy, more 

 or less yellotcish-peUucid at the base ; beneath yellowish, with the tip 

 pitchy. Hypopygiuin small. Legs taicny -yellow ; posterior coxce ral her 

 dusky ; femora black at Ihe tip ; tarsi dusky at the tip ; hind tibice darker, 

 nearly black at the tip ; hind tarsi rather darker ; ungues small, equal 

 (as usual in the male) ; fore femora stout, armed beneath with black 

 spines (six to ten) ; hind tibiae sparingly and slightly ciliated. 



"Rare, round at Holy wood, generally at the skirts of young 

 larch i^lantations. (I.) 



" Obs. C. armijjcs, Meig. (Zw. vii. 20, 70), resembles this species 

 in many respects, but the halteres are loJiite." — Hal. MSS. 



58. distinctus, Hal. Ent. Mag. i. 152 (1S33). Fmn. " niger, 

 nitidus, scutello flavo, pleuris pedibusc[ue luteis, posticis obscurioribus, 

 alis nudis hyalinis, halteribns albidis, fenioribus apice nigris anticis 

 subtus spinulosis. Long, li; alar. 3 lin. 



" Fem. Face dusky yellow. Proboscis stout. Palpi nearly filiform, 

 dusky. Antennse dusky yellow ; first joint large, pitchy black. Thorax 

 above pitchy black. Scutellum yellow. Pleura) tawny-yellow ; a band 

 descending under the wings, and the middle of the mesosternum dusky. 

 Wings nearly hyaline; veins light brownish-yellow; second cubital areolet 

 narrow, more than twice as long as the first; veining nearly as in C.jia- 

 vipes, but the first cubital areolet rather longer. Halteres creamy-white, 

 yellowish at the base. Legs tawny-yellow ; fore femora witli the tip 

 only, middle pair to one-fourth, hind pair to one-half, black ; fore tibiaa 

 with a blackish dot at the tip ; tarsi dusky at the tip (the last three 

 joints) ; ungues small, equal, with a small tooth at the base (as in C. 

 ferruyineus') ; fore femora stout, arnied with black spines beneath (ten, 

 or fewer)."— //«/. MSS. 



Very rare. Found at Holy wood. (T.) 



59. variegatus, Winn. ! Linn. Ent. vi. 59. 57. pi. 7. f. 57 (1852). 

 Maset I'h'in. niger, nitidus, facie, proboscide palpiscpie fusco-fiavis, pec- 

 tore fulvo aut nigro-fusco maculis duabus lateralibus argcnteis, alis 



