146 AV. H. ASHMEAD. 



distinct, black ; the marginal nervure is greatly incrassated towards tip which 

 does not reach costal margin, the second transverse vein in a sniokj' cloud; 

 areolet and cubital cells distinct, the latter distinctly closed : there is also a 

 smoky cloud at the break in the anal nervure and the thickened cubital nervure 

 does not quite reach the apical margin. 



i/f<6.— Texas. Described from one specimen, discovered among 

 a lot of Texan Hemiptera, kindly sent me by Mr. Geo. J. Angell, 

 of New York City. 



33. Aulax Hai'riii$;foni n. sp.— 9- Length .11 inch. Head and thorax 

 black, rugose, the sculpture being somewhat longitudinal. Antennae 14-jointed, 

 brown, reaching to the tip of the abdomen, joints 3. 4, 5 and 6 very nearly equal 

 in length. The parapsides are distinct, and there is a slight median groove ex- 

 tending from base of scutellum not quite to middle of mesothorax ; scutellum 

 rounded with two sharply defined, oblique fovea; at base. The legs and abdomen 

 slightly sanguineous ; wings hyaline with distinct brown veins, a closed marginal 

 cell, a rather large areolet and the cubital cell open at base. 



Hab. — Canada. Described from one specimen sent by INIr. W. 

 Hague Harrington, of Ottawa, Canada. 



This is the first real Aulax to be desci'il)ed in our fauna, and like 

 the European species of the genus it will no doubt be found to pro- 

 duce a gall on a plant belonging to the ComposlUe. 



BASSETTIA n. g. 



The antennse are very slender, 14-jointed, very slightly thickened 

 toward tips, third joint slightly longer than fourth. Head as wide 

 as the posterior })art of mesothorax, punctate ; cheeks full bulging. 

 Thorax not high, one-third longer than wide, well rounded ; meso- 

 thorax sharply transversely rugulose, extending and entirely hiding 

 and covering the prothorax above ; parapsidal grooves very delicate, 

 subobsolete anteriorly and converging posteriorly ; two short, delicate 

 median grooves anteriorly, pleurae rugulose ; scutellum longer than 

 broad, not elevated above a line with the megothorax, rounded pos- 

 teriorly, with a transverse groove at base and two small, oblique, 

 shallow foveie, only distinguishable with a high power lens. Meta- 

 thorax abruptly declining. Abdomen longer than thorax, com- 

 pressed, a tuft of hair at base of second segment. Wings hyaline, 

 not pubescent; veins very slender, delicate; radial cell long, oi)en. 



In structure of thorax and sculj)ture this genus is related to Rhoo- 

 philus Mayr, otherwise it seems very distinct. It is dedicated to 

 Mr. H. F. Bassett, of Waterbury, Conn., who has done so nmch 

 towards advancing our knowledge of these intricate Hymenopters. 



