JOBLOTIA DIGITATUS 177 



Original Desckiption of Cui.ex diqitatds: 



Long. mill. 4. 



2 Nigricans : palpis, proboscide, facie, articulo primo antennarum nigris. — Thorax 

 dorso parum chalybeo-pollinoso; humeris subcupreis: pleurls albidi et nlvel sed non 

 ubique tomentosis. — Scutellum colore thoracis polline fusco-subvirescente et chaly- 

 beo parum adsperso, et limbo exili lutescente. — Metathorax in medio niger lateribus 

 et origine alarum lutescentibus. — Halter es fusci basi lutea. — Al)dom,en dorso nigri- 

 cante ut thorax parum pollinoso, polline fusco-subvirescente et chalybeo: ventre 

 albo-pollinoso. — Pedes in latere anteriori nigricante sub-chalybei, in facie posteriori 

 femoribus sub-argenteis, tibiis pallida sub-aeneis, tarsis sub-cupreis; tarsi intermedii 

 articulis quatuor ultimis extrinsecus tantum albido-sub-argentels; pedes postici lon- 

 gissimi, tarsis articulis duobus extremis omnino albo-sub-argenteis. 



Okioinai. Description of Trichoprosopon nivipes: 



Thorax dark brown, pleurae and front of the mesothorax at the sides bright 

 ochraceous, with a distinct silver spot on the middle of the pleurae. Abdomen deep 

 metallic purple above, golden-yellow below, with lateral triangular golden spots. 

 Legs deep brownish-black, with purple and blue metallic reflections, the four tarsi 

 of the middle legs and last two of the hind legs pure white in both sexes. Ungues 

 of the ? small, equal and simple; in the ^ the fore and mid ungues unequal, simple, 

 and in the hind legs equal and simple. 



5. Head completely covered with bright ochraceous flat scales with metallic 

 mauve reflections, sometimes entirely mauve; those at the side and just round the 

 eyes show silvery-white reflections in some lights; projecting over the eyes are short 

 dark-brown bristles; eyes deep purplish black, green and blue; antennae brown, 

 with pale rings, and a double set of verticillate hairs, the large ones arising from 

 just above the paler bands, the smaller from just below; hairs dark brown; basal 

 joints rather brighter brown on one side, with numerous curved brown hairs; 

 clypeus brown, densely covered with black bristles; palpi covered with blackish 

 scales with dull purple reflections, moderately long proboscis, covered with brown 

 scales, somewhat ochraceous in the middle and darker at the apex. 



Thorax brown, the mesonotum covered with bronzy spindle-shaped scales; sides 

 of the mesonotum ochraceous; prothoracic lobes deep ochraceous, with flattened 

 scales, which show mauve tints, and brown bristles; scutellum chestnut-brown, 

 covered with dark flat scales, showing peacock-blue and green reflections; meta- 

 notum deep brown and chestnut-brown, with two median rows of flat blue scales 

 and a dense tuft of bristles arranged in two lateral lines; pleurae ochraceous, with 

 numerous patches of small flat dull white scales and a somewhat darker patch in 

 the middle. 



Abdomen steely in places, the apical segment bright testaceous; covered with 

 deep purplish-brown scales showing brilliant purple and mauve reflections; apex 

 densely bristly; laterally are creamy- white to yellow scales, forming more or less 

 triangular patches, the bases of the triangles being on the apical borders of the 

 segments; venter ochraceous, with creamy-yellow and pale-creamy scales. 



Iiegs brown, covered with deep brown scales, which show brilliant purple and 

 blue reflections, and in places a dull ochraceous tint; on the apices of the joints 

 and along the tibiae are short black spines; mid legs with all four tarsi white above; 

 hind legs densely scaly, the last two tarsi pure white; tibiae slightly pale at the 

 base; hind metatarsi as long as the tibiae; ungues small, equal and simple. 



Wings dusky, the veins very densely covered with rather broad scales, like 

 Taeniorhynchus ; fork-cells long, the first sub-marginal considerably longer and nar- 

 rower than the second posterior cell, its base nearer the base of the wing than that 

 of the latter; stem of the first sub-marginal rather short, considerably less than half 

 the length of the cell; stem of the second posterior more than half the length of the 

 cell; mid cross-vein a little nearer the apex of the wing than the supernumerary 

 cross-vein; posterior cross-vein on a line with the mid; the sub-costal joins the 

 costal a little past the level of the cross-veins; the second longitudinal vein carried 

 nearly to the base of the wing; the anal cell is very large. 



Halteres with an orchaceous stem and fuscous knob, and numerous black scales 

 on it, which pass down the stem. 



Length. — 7 to 8 mm. 



r?. Very similar to the 9; antennse banded brown and white, with two rows of 

 verticillate hairs, the larger dense, long, and brown; the penultimate joint densely 

 hairy; basal joint testaceous yellow; palpi long and thin, deep bronzy-brown, 4- 

 jointe'd, the joints of nearly equal length, the apex with four thick spines, and the 

 penultimate joint with a few black lateral spines. 



Abdomen peacock-blue at the base, remainder purple; basal joint scaly, brown. 



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