LIST OF DIPTERA. 



Group Psilopa, Fallen. 



Notiphila madizans, Fall. Act. Holm. 1813, 252, 8. Meig. Dipt. 

 vi. 74, 32. Hal. Ent. Mag. i. 178. Ann. Nat. Hist. iii. 223, 

 6. N. nigella, Meig. Dipt. vi. 72, 26. Psilopa madizans, 

 Fall. Hydrom. 7, 2. Zett. Ins. Lapp. 718, 1. Stenh. Monogr. 

 263, 11. Zett. Dipt. Scand. v. 1937, 5. Trimerina madizans, 

 Macq. Hist. Nat. Dipt. ii. 529, 2. Hydrellia nigella, Meig. 

 Dipt. vii. 373,20. 



a. England. Presented by F. Walker, Esq. 



Group Hygrella, Holiday. 



Notiphila nitidula, Fall. Act. Holm. 1813, 252. Meig. Dipt. vi. 

 75, 34. Hal. Ann. Nat. Hist. iii. 223, 7. Psilopa nitidula, 

 Fall. Act. Holm. 1813, 252, 9. Hydrom. 7, 4. Zett. Ins. 

 Lapp. 719, 2. Dipt. Scand. v. 1932, 1. Sten. Mon. Ephyd. 

 261, 8. Notiphila compta, Jfeigr. Z>^. vi. 68, 13. Hydrellia 

 compta, Macq. Hist. Nat. Dipt. ii. 524, 8. Keratocera viri- 

 descens ? Z)esu. Essai Myod. 790, 10. 



a. England. Presented by F. Walker, Esq. 



b. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 



G. Barnston, Esq. 



Notiphila smaragdi, n. s., fern. Viridis, ceneo varia, capite nigro, 

 palpis antennis pedibusque nigris, tarsis basi tibiisque posteriori- 

 bus piceis, alis limpidis ad costam subfulvis. 

 Body bright green, brassy here and there, clothed with short 

 black hairs : head and chest beset with a few black bristles : head 

 black; epistoma not prominent : eyes red ; fore part rather flat, its 

 facets a little larger than those elsewhere : sucker and palpi black ; 

 feelers black, nearly as long as the face ; third joint linear, rounded 

 at the tip, more than twice the length of the second ; bristle downy, 

 almost filiform, nearly twice the length of the third joint ; abdomen 

 obconical, not longer than the chest : legs black, beset with black 

 bristles ; feet towards the base and four hind shanks pitchy ; wings 

 colourless, slightly tawny along the fore border; wing-ribs and veins 

 pale tawny ; longitudinal veins straight, first widened towards the 

 tip ; middle cross-vein very short ; lower cross-vein oblique, slightly 

 curved inward, parted by more than twice its length from the middle 

 cross-vein, by more than thrice its length from the end of the fourth 

 longitudinal vein, and by less than its length from the end of the 



