129 



the beaks longest in the 6th to tlie 12th joints ; articular 

 appendages hair-like, eonnivent towards the tips of the 

 joints, and each subspirally curved to the extent of 

 about half a turn Species Nos. 23 and 25, Brit. 



c.c. Endings of the bristling hair on nervures posterior to the 

 prsebrachial arranged in an angulate or zigzag line with 

 one another. Third joint in the S antennae furnished 

 with a cupuliform verticil of hairs equal in amplitude to 

 that of the 4th joint ; joints 3rd to 5th in this sex and 

 species provided in addition with some long wide- 

 spreading spine-like scales on the inner side of the bulbs 

 inserted among the hairs ; the beaks of the joints of 

 nearly uniform length throughout the flagellum ; articular 

 appendages indistinct, eonnivent apparently at about the 

 middle of the beak Species No. 22, Brit. 



c.c. Bristling hair extended farthest upon the cubitus, and usually 

 subequally far upon the anterior pobracliial ; its ending on 

 the anterior radius subopposite the end of the subcosta ; 

 subcosta, pra?brachial and anal nervures without bristling 

 hair ; its endings on the radial branches and cubitus in an 

 oblique slightly curved line with one another j those on the 

 posterior nervures in a zigzag line ; apex of the wing ellipsoidal 

 or subacute between the cubitus and the praebrachial nervure. 

 Third joint in the <? antennae subequal in length to the 4th, 

 bulbose with a stout tapering beak subequal in length to the 

 bulb ; each of these joints furnished with an ample cupuliform 

 verticil of hairs ; the beaks elongate in joints 5 — 15, and the 

 apiculus of the 16th slender ; articular appendages long, 

 hair-like, curved subspirally to the extent of half or three- 

 quarters of a turn Species Nos. 19 and 21, Brit. 



D. First joint in the <? antennae shorter than the next two together; 2nd 

 joint subglobular. 



D. First joint in the ^ antennse longer than the 2nd joint. 



d. Bristling hair extended farthest upon the cubitus ; its ending 

 on the anterior radius very near the bifurcation of the 

 radius, and considerably interior to the end of the 

 subcosta; subcosta, prsebrachial and anal nervures without 

 bristling hair ; its endings on the radial branches and 

 cubitus in a bold curved line with one another, and those 

 on posterior nervures in a zigzag ; apex of wing ellip- 

 soidally rounded between the cubitus and the prsebrachial 

 nervure. Third joint in the <J antennse similar and 

 subequal in length to the 4th, ovoid or bulbose, with the 

 beak short, tapering and stout, and with the verticil of 

 fine hairs cyathiform and ample ; the beaks of the joints 



