in the Collection of W. W. Saunders, Esq. 331 



Drosophila inversa. 

 Fusca, subtus pallidior, antennis abdotnineque nigris, thoracis 

 tomento cinereo, pedibus testaceis, alis sub-cinereis, vitta 

 costali exteriore obscuriore, venis nigris, halteribus albidis. 

 Brown, paler beneath : antennee black ; thorax with cinereous 

 tomentuin ; abdomen black ; legs testaceous ; wings very slightly 

 greyish, with a darker grey stripe along the apical half of the 

 costa; veins black; discal transverse vein straight, parted by 

 twice its length from the border, and by more than twice its 

 length from the prsebrachial transverse vein ; halteres whitish. 

 Length of the body ]| line ; of the wings 3 lines. 

 United States. 



Genus Asteia, Meig. 

 Asteia ? tenuis. 

 Nigra, nitens, gracillima, antennis albidis, thoracis disco pallida 

 cinereo, pedibus albido- testaceis, alis cinereis perangustis, 

 costa alba apice nigricante, inargine postico vitreo, halteribus 

 pallidis. 

 Black, shining, very slender : antennae whitish ; disk of the 

 thorax pale cinereous ; legs whitish testaceous ; wings grey, very 

 narrow, vitreous along the hind border, white along the costa, 

 whose tip is blackish ; discal transverse vein straight, oblique, 

 parted by less than its length from the border, and by much more 

 than its length from the praebrachial transverse vein ; halteres 

 pale. 



Length of the body 2 lines ; of the wings 3 lines. 

 United States. 



NEMOCERA. 



Fam. BIBIONID^. 



Genus Bibio, Geoffr. 



Bibio criorhinus ? 



Fcem. — Cyaneo-niger, capite nigro valde attenuato, abdomine 



atro, alis halteribusque nigris. 

 Mas. — Pilosissimus, tibiis ferrugineis apice nigris, tarsorum 

 articulis basi ferrugineis, alis sub-cinereis, venis albidis apud 

 costam nigris. 

 Bibio criorhinus? Bellardi, Ditt. Mess. i. 17, 1. 

 Female. — Bluish-black : head black, much prolonged and 



z 2 



