LIST OF DIPTERA. 1095 



Helomzya.? lateralis, n. s., fem. Fulva, thoracis lateribus fusco 

 vittatis, pectore abdomineque flavis, hujus maculis apiceque Jla- 

 ws, palpis antennis pedibusque fulvis, alis subfulvis apice fusco 

 maculatis. 



Body tawny, beset with a few long and stout black bristles : head 

 and chest without hairs : epistoma not prominent ; face flat, adorned 

 with a black stripe on each side, its sides without bristles: eyes red, 

 slightly convex; facets on the hind part smaller than those elsewhere: 

 sucker pale tawny, clothed with tawny hairs ; palpi pale tawny : 

 feelers tawny, much shorter than the face ; third joint nearly round, 

 longer than the second ; bristle black, slender, downy, full thrice the 

 length of the third joint : a brown stripe along each side of the chest : 

 breast yellow : abdomen yellow, slightly tapering from the base to 

 the tip, narrower and much longer than the chest, clothed with black 

 hairs and bristles ; a large pitchy spot extends from the fore border 

 as far as the middle on each side of every segment ; tip of the 

 abdomen also pitchy : legs tawny, clothed with short black hairs 

 and with a few black bristles ; claws black ; fore feet, with the 

 exception of the first joint, dark tawny ; wings slightly tawny ; a 

 large brown spot at the tip, paler towards the hinder border, on ap- 

 proaching which it disappears; wing-ribs tawny; veins black, 

 tawny towards the base ; lower cross-vein curved inward, distant by 

 thrice its length from the middle cross-veins ; poisers yellow. 

 Length of the body 3 lines ; of the wings 5 lines. 



a. North America. Presented by the Entomological Club. 



Group Leria, Desv. Essai Myod. 653. 



Group Thelida, Desv. Essai Myod. 655. 



Group Lentiphora, Desv. Essai Myod. 656. 



Group Orbellia, Desv. Essai Myod. 656. 



Dich^ta, Meigen. 



Dichjeta caudata, Meig. Dipt. vi. 62, 1, pi. 58,/. 1 — 6. Macq. 



Hist. Nat. Dipt. ii. 521, 1, pi. 21, /. 8. Notiphila caudata, 



Fall. Act. Holm. 1813, 249, 1. Hydromyz. 8, 1. Zett. Ins. 



Lapp. 717, 2. Holiday, Ann. Nat. Hist. iii. 222, 4. Stenh. 



Monogr. 194, 1. Zett. 'Dipt. Scand. v. 1853, 1. 

 a. Aix-la-Chapelle. Presented by F. Walker, Esq. 



