﻿63G Prof. Mario Bezzi's Report on a Collection of 



7 (6). Wings not so coloured ; discal cell more obtuse ; second 



longitudinal vein not so curved before the end ; abdomen 

 without black erect hair?. 



8 (9). Wings darkened, the costal portion more intensively ; first 



posterior cell very narrowed at the end ; abdomen with 

 patches of scales on the sides . lepidogastra, sp. n., p. 639. 



9 (8). Wings clear, obliquely bordered with black on the anterior 



half; first posterior cell broadly open ; sides of the abdo- 

 men without scales . . sicpnoidea, sp. n., p. 640. 



10 (5). The transverse vein between the discal and the second basal 



cell straight, or only slightly curved. 



11 (22). Wings obliquely bordered with black on the anterior half 



and the posterior half clear, without isolated black spots 

 and with the discal cell mostly hyaline. 



12 (19). The black fore border of the wings without any black 



projection on the external upper angle of the discal cell ; 

 legs black or with only reddish tibiae. 



13 (16). Pleurae wholly with yellowish hairs or with the yellow hairs 



predominant ; metapleural tuft yellow-grey, absolutely 

 without black hairs. 



14 (15). Antennae black ; sides of the second, third and fourth ab- 



dominal segments with a single broad silvery spot, which 

 is connected with a white transverse band on the third seg- 

 ment; discal cell short and broad, dimidiata, Macq. p. 641. 



15 (14). Antennae reddish at base ; sides of the abdomen without 



such a large silvery spot ; discal cell narrow and more 

 than twice as long as broad . discriminata, sp. n., p. 641. 



16 (13). Pleurae with black hairs ; metapleural tuft black or with 



the black hairs predominant. 



17 (18). Third abdominal segment only with a white band ; meta- 



pleural tuft black ; tibiae black ; black costal border of 

 the wings extending beyond the small cross-vein ; species 

 of greater size .... Inctifera, sp. n., p. 642. 



18 (17). Abdomen with the second, third and fourth segments wholly 



argenteous; metapleural tuft black and grey; tibiae 

 reddish ; black costal border ending a little beyond the 

 small cross-vein ; species of smaller size 



argyrophora, sp. n., p. 643. 



19 (12). The black fore border with a black tooth over the external 



angle of the discal cell ; legs reddish or red. 



20 (21). The external upper angle of the discal cell is wholly filled 



with black . . . argentifrons, Macq., p. 643. 



21 (20). The external upper angle of the discal cell is hyaline 



scaligera, sp. n., p. 643. 



