CBBATOPOGON. 229 



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

 slender. 



Not rare. (E.) 



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

 nitidus, antennis puberulis flavidis, alis nudis fusco-hyalinis, halteribus 

 apice nigris, abdoinine basi flavido, pedibus luteis, femoribus apice nigris 

 anticis subtus spinulosis. Long. 1^; alar. 2^ lin. 



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

 Palpi nearly filiform, dusky yellowish. Antennae 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. Wings smoky hyaline, naked, 

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

 as the first. Halteres yellowish, with black tips. Abdomen pitchy, more 

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

 pitchy. Hypopygium small. Legs tawny-yellow ; posterior coxae rather 

 dusky ; femora black at the tip ; tarsi dusky at the tip ; hind tibiae 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. Found at Holy wood, generally at the skirts of young 

 larch plantations. (I.) 



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

 in many respects, but the Tialteres are white." Hal. MSS. 



58. distinctus, Hal. Ent. Mag. i. 152 (1833). Fcem. "niger, 

 nitidus, scutello fluvo, pleuris pedibusque luteis, posticis obscurioribus, 

 alis nudis hyalinis, halteribus albidis, femoribus apice nigris anticis 

 subtus spinulosis. Long. 1^; alar. 3 lin. 



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

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

 above pitchy black. Scutellum yellow. Pleurae 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.fla- 

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

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

 only, middle pair to one-fourth, hind pair to one-half, black ; fore tibia3 

 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. 

 ferrugineus) ; fore femora stout, armed with black spines beneath (ten, 

 or fewer)." Hal. MSS. 



Very rare. Found at Holywood. (I.) 



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

 Mas et Fcem. niger, nitidus, facie, proboscide palpisque fusco-flavis, pec- 

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



