[nARRiNGToN] CANADIAN PROCTOTRYPID^ 191 



Terminal segments of abdomen forming deflexed tail, which is shorter than second 

 segment ; second segment polished, terminal segment finely punctulate. 

 S' ■ — Closely resembles Ç except in shape of abdomen and antennae. 



Described from one 9 and one <? taken in August, Hull. The female 

 very closely resembles S. anomaliventris, excej^t in the shape of second 

 ventral segment, which is much flatter. 



Trichacis auripes. 



Trichasis auripes, Provancher, Add. et Corr., p. 403, 9. 

 Trichasis auripes (Prov.), Ashmead, Monog. N. A. Proc, p. 297. 



Ty])e Ç in Coll. Provancher, from Cap Eouge. 



ErITRISSOMERUS PALLIPES, Sj). 710V. 



9 ■ — Length 1-2-1 '5 mm. Rufo-piceous, legs yellowish. Head broad, darker 

 than thorax, microscopically punctate or shagreened ; lateral ocelli as far from the 

 eyes as from central one ; antennae yellow, the club dusky, the pedicel as long as 

 first two joints of flagellum, club joints subquadrate. Thorax and abdomen rufo- 

 piceous, petiole paler ; metathorax and petiole pubescent. 



^ . — Closely resembles Ç in size and coloration. Antennae paler ; pedicel 

 small, first joint of flagellum minute, closelj' joined to the swollen second joint, the 

 two together almost egg-shaped, first joint of club small, subtriangular, the follow- 

 ing joints quadrate, subpedicellate, terminal joint longer, acuminate. 



Described from several 9 and $ specimens obtained near Hull in 

 August. 



POLYGNOTUS, S}). 



Twenty-seven specimens bred from ceeidomyid galls on stems of 

 Muhlenbe]-gia, by Dr. Fletcher, do not seem to answer to any described 

 species. 



POLYGNOTUS VITICOLA. 



Polygnotus viticola, Ashmead, Monog. N. A. Proc, p. .31.3. 



One S taken 2Tth August, 1878, at Hull, distinguished by the punc- 

 tate ventral segments and the hairy antennœ. 



Polygnotus, sp. 



Numerous specimens bred from fleshy galls formed upon the twigs of 

 salix by Cecidomyids. Mr. Ashmead, some years ago, determined speci- 

 mens of this species as Platygaster error, Fitch (Monog. N.A. Proc, p. 291) 

 but although apparently our commonest species, it does not seem to me 

 to be among those described. Other members of this genus occur, but 

 my material is scanty and I have not had time to satisfactorily study 

 them. 



Platygaster obscuripennls. 



Platygaster ohscuripennis, Ashmead, Monog. N. A. Proc, p. 325. 



Types 9 and $ in Coll. Ashmead, from Ottawa. One 9 and two 

 S $ also in my collection bred from galls on willows. 



