GCXJTOMYIA. 471 



3. Discal cell present, oblong, emitting 



three straight equidistant veinlets . . affinis, sp. n., p. 472. 

 Discal cell absent; base of 3rd pos- 

 terior cell more or less pointed ; an- 

 terior branch of 4th longitudinal vein 

 forked 4. 



4. Posterior cross-vein at base of discal 



cell aperta, sp. n., p. 473. 



Posterior cross-vein much before base 

 of discal cell; anterior branch of 

 L'nd longitudinal vein sometimes in- 

 distinct, appearing almost like a 

 marginal cross-vein proxima, sp. n., p. 474. 



337. Gkmomyia inconipleta, sp. nov. (PI. IX, fig. 5 ; PI. XI, 

 fig. 19.) 



c? 5 Head : occiput blackish grey ; frons and proboscis yel- 

 lowish ; palpi blackish; antennae blackish, rather thickly pubescent ; 

 eyes black, facets large. Thorax yellowish, dorsum a little tinged 

 with chestnut-brown, sometimes taking the form of the three usual 

 Tipulid stripes, the outer ones being distinctly interrupted at the 

 suture, behind which they each enlarge into a spot of considerable 

 size ; the thoracic sutures light coloured, the anterior lower part 

 of the neck pale yellow. Scutellum yellowish, traces of a darker 

 triangular mark at base; metanotum brown, just perceptibly 

 dusted with grey. Dorsum of thorax sometimes with traces of 

 light dust ; the sides yellowish or brownish yellow ; pleurae con- 

 colorous or tinged with brown, generally more or less dusted with 

 grey. Abdomen yellowish, the dorsum with a greater or less 

 admixture of brown ; belly generally lighter. The whole abdomen 

 with light pale pubescence. Legs uniformly pale yellow. Wings 

 very pale grey, somewhat iridescent. Auxiliary vein ending in 

 the costa at about the middle of the wing; the subcostal cross- 

 vein placed immediately before its tip ; the 1st longitudinal vein 

 ending at three-fourths the length of the wing, often becoming 

 faint at the tip, being approximately parallel with the costa ; the 

 2nd longitudinal vein originating just before one-third of the 

 distance between the tip of the subcostal vein and the tip of the 

 1st, taking, at half its length, a sudden turn upwards, and ending 

 in the costa some little distance beyond the tip of the 1st vein : 

 the 3rd vein originating at the angle of the 2nd, its stem or base 

 being very short, the rest of the vein taking a very slight curve 

 downwards, and ending just above the wing-tip ; anterior cross- 

 vein of very unusual length, curved, its convexity towards the 

 base of the wing, its lower end reaching the upper inner corner of 

 the discal cell. This cell is pentagonal, approximately triangular, 

 its inner side very short, its two distal sides about equal in length, 

 and its anterior and posterior sides about equal to one another ; 

 the three veinlets issuing from it are equidistant at their origin, 

 the outer ones greatly diverging ; the. 4th posterior cell has 



