81 



hairs. Palpe well developed with three or four digits. Mentum triangular with a 

 rather small, median tooth and from thirteen to fourteen small lateral teeth. 



Colour deep grey, often almost black. 



Biology: Of 0. pnnctor, in the above-named sense, I have only seen one 

 single specimen, brought me by Mr. Kryger from Tisvilde-forest, near the shores 

 of the Kattegat. I immediately saw that this specimen differed very much from all 

 our other forest mosquitoes belonging td this group. Especially the restriction in 

 the middle of the abdominal bands was very conspicuous. Later on Mr. Edwards 

 corroborated my supposition, writing to me "that this was the first undoubted 

 specimen he had got from Denmark"; all the other related specimens belonged 

 either to 0. communis or 0. prodotes; I have never found the larva; the specimens 

 used for the table derive from Mr. Edwards' collection. 



The real geographical distribution of the species is quite unknown. 



12. O. prodotes (Dyar). 

 Tab. XI. 



Description. Female: Proboscis moderate, cylindrical, uniform, black. 

 Palpi short, about one fifth as long as proboscis, black with few, whitish scales 

 intermixed; seta' moderate, bristley. Antenna' filiform, the joints subequal, rugose, 

 pilose, black Vith some whitish scales, second joint longer and thicker than third, 

 pale at base; tori subspherical with a cup-shaped excavation, luteous, darker within; 

 hairs of whorls black. Clypeus rounded, prominent, black, nude. Eyes black. Occi- 

 put black; scales on vertex lanceolate, curved yellowish white, on sides broad milky- 

 white throughout, now and then an ill-defined lateral black patch; bristles on the 

 occiput and along margin of eyes black, those projecting between the eyes pale. 



Prothoracic lobes elliptical, remote dorsally, black, clothed with narrow white 

 scales and dark bristles. Mesonotum black with a coating of brown hairs commonly 

 spread over the whole mesonotum and without wellmarked blackish lines. Scutellum 

 trilobate black, each lobe with a group of brown bristles. Postnotum elliptical, prominent 

 blackish nude. Pleurae brown, coxa j luteous, clothed with patches of elliptical Hat, 

 while scales and rows of pale bristles. 



Abdomen subcylindrical, tapering posteriorly; dorsal vestiture black with broad 

 white basal segmental bands which in the middle have a rusty colour; first segment 

 almost white; venter whitish, scales with small black segmental medio-apical spots; 

 cerci black. 



Wings rather broad, hyaline; petiole of second marginal cell shorter than 

 its cell, that of second posterior cell slightly longer than its cell; basal cross-vein 

 distant almost its own length from anterior cross-vein; scales blackish-brown, the 

 outstanding ones broadly linear. Halleres whitish, with yellowish knobs. 



Legs moderately long and slender; femora yellowish-white; brightest below, 

 darker above, a black ring before tip; tibiae with dirty-white scales below, bronzy black 

 above with a few white scales intermixed, tips black; tarsi almost black; the basal 



u. K. I). Vidensk. Selsk Skr., nuturvidensk. og mathem. Aid. s. H^klie. VII, l. U 



