1906.] '^ 



specific name. Most of the specimens I have seen were taken in 

 June and July, but the species is found well into October. 



16.— H. CURVIPES, Fin. Male: Eyes hare, or at most with a few hardly visible 

 short, scattered hairs ; arista distinctly pubescent for the greater part of its length. 

 Thorax covered with yelloioish-cinereous or bluish-cinereous tomentum, which leaves 

 four very indistinct longitudinal stripes of olivaceous ground-colour, shoulders 

 light cinereous. Abdomen translucent yelloio with a narrow blackish-cinereous and 

 slightly shining dorsal stripe and light cinereous apical segment, which colour 

 sometimes also extends on to the apical half of the 3rd segment. T'ront femora 

 m7A ^«;o strong and conspicuous sub-basal ventral bristles; front tihix in middle 

 of postero-ventral surface with a slightly elevated polished black ridge, immediately 

 beyond which on ventral surface is an oval polished concavity ; \st joint of tarsus 

 with a few long fine hairs. Middle femora with about six extremely long bristles 

 at base of anterior surface, and three to four strong and conspicuous postero-ventral 

 spines placed at wide regular intervals and occupying about middle third. Rind 

 femora long, slightly curved and subclavate ; hind tibi% strongly bent ventrally and 

 slightly enlarged in apical half, on ventral surface a little beyond middle a very 

 characteristic i.e«c^^ of about six long, stiff bristles, which converge at apex, where 

 they unite and form a conspicuous hook, towards apex of tibia this pencil is followed 

 by 'a short row of about six very short stiff erect bristles. Wings distinctly tinged 

 with yellowish-brown, posterior transverse vein slightly bent outwards in upper 

 half ; calyptra yellowish-hyaline ; halteres orange-yellow. Size, 1-1\ mm. 



Female: Frons black, covered with yellowish-cinereous tomentum; ocellar 

 triangle light cinereous and slightly shining ; arista distinctly pubescent. Thorax 

 as in (?, inner dorso-central bristles more distinct. Abdomen with 1st segment 

 dull yellow, except a rather broad dorsal stripe and the hind margin, which are 

 olivaceous-cinereous, 2nd segment of the latter colour with a small basal patch on 

 each side more or less dull yellow, remaining segments olivaceous-cinereous, with 

 sometimes a trace of yellow on each side of base of 3rd. Middle tibix with two 

 posterior bristles at one-fourth and one-half from apex respectively. Sind tibix 

 with one subapical dorsal, one median antero-dorsal, one median postero-dorsal, 

 and one rather smaller post-median antero-ventral bristle. Wings more hyaline 

 than in $ , posterior transverse vein straighter ; calyptra and halteres as in $ . 

 Size, 6 — 7 mm. 



This well marked and easily recognised species appears to be 

 rare. I have only seen ten specimens, seven of which were taken by 

 Dr. J. H. Wood in Stoke Wood. Among the examples sent me by 

 Mr. Verrall were a male from Woolhope, taken by Col. Terbury, and 

 two females from Howie Hill (? Shropshire). I am not aware of 

 any Scotch records. 



17.— H. GLABEICULA, Fin. Male: Fyes bare, closely contiguous, propor- 

 tionately very large and occupying more of the head than in the preceding species ; 

 jowls exceedingly small ; arista quite bare. Thorax with shoulders shining blade, 



G 2 



