INSECUTOR INSCITI^ MENSTRUUS 123 



Legs : femora dark red brown, tibia and tarsi dark red yel- 

 low ; wings hyaline not clear ; veins dark. 



Described from one male from St. Anthony, Newfoundland, 

 4th May. 



It is closely allied to tristis Walker, apart from which I 

 consider the mesopleural bristle a good specific character. 



Barbastoma, new genus ( from Greek harha, a beard ; stoma, 



a mouth). 



Generic characters: Dorso centrals (I think) four small; 

 one humeral, one presutural, two notopleura, only two supra 

 alar, three pair scutellar, no prosternal ; mid tibia with two 

 pairs of preapical bristles ; wings, costa with a conspicuous 

 bump over the tip of the auxiliary vein, spines few short ; 

 small cross vein below tip of auxiliary ; vein one very long, 

 tip ending above midway between the two cross-veins ; large 

 cross-vein joining vein five at an acute angle ; foremost f ronto- 

 orbital a little shorter than the hind one (about equal) ; lower 

 half of oral margin with long silky hairs, longer than the 

 vibrissas. 



Genotype, the following species. 



Barbastoma barbatus, new species. 



Male. Fronto-orbitals nearly equal, the foremost a little 

 shorter, no prosternal bristles. 



Length about 4 mm. Head : occiput gray-black, antennae to 

 front red-yellow, face and cheeks pale yellow, antennae dark 

 red-yellow, inf uscated ; arista very short, less than the length 

 of the head, microscopically pubescent. Vibrissa one very 

 short, from it to halfway two rows of longish black hairs, 

 from there to the lower corner very long golden hairs twice 

 as long as the vibrissae. 



Thorax nearly all darkened by moisture. What is shown is 

 a pale drab brown. The pin has destroyed the sight of the 

 dorso-centrals, one each side of the suture are short ; dorsum 

 with sparing hairs which are long, over half of the length of 

 the dorso-centrals. Scutellum with three pairs of lateral 

 bristles, the third about midway between the usual two hairs. 



