[hareington] CANADIAN PROCTOTRYPID^ 175 



ISOBRACHIUM MANDIBULARE. 



Isobrachium mandibulare, Ashmead, Monog. N. A. Proc, p. 38. 

 One 9, labelled Toronto, 24th April, from Mr. W. Metcalfe. 



Mesitius vancouverensis. 



Mesitius vancouverensis, Ashmead, Monog. X. A. Proc, p. 64. 



The type 9 in Coll. Ashmead was received by me from Eev. G. W. 

 Taylor, Victoria, Y. I. 



Mesitius bifoveolatus. 



Mesitius bifoveolatus, Ashmead, Monog. N. A. Proc, p. 66. 



Two 9 9. Ottawa, 11th May; Hull, Que., 27th August, 1898. 



Anoxus Chittendenii. 



Anoxus Chittendenii, Ashmead, Monog. N. A. Proc, p. G8. 



One S taken at Hull on 28th July, 1894. 



Perisemus formicoides. 



Bethylusformicoides,7ro\ancher, Add. Faune 'Hyinéno'pterologiqne, p. 179, 9. 



Epy ris formicoides, Provancher, ibid., p. 402. 



Perisemus formicoides (Prov.), Ashmead, Monog. N. A. Proc, p. 70. 



The type 9 was taken at Ottawa. In my collection is a specimen 

 determined by Provancher, and also taken at Ottawa. It seems to differ 

 from P. prolongatus, Prov., chiefly in having the antennœ somewhat more 

 slender, and the mandibles yellow. It may be only a form of that species. 



Perisemus prolongatus. 



Bethylus prolonç/atus, Provancher, Nat. Can., vol. xii, p. 265, 9 ; Faune Ent.' 



Can., p. 56.3. 

 Bethylus j^rolongat us (Prov.), Ashmead, Ent. Am., iii, p. 97. 

 Epyris prolo7igatus, Provancher, Add. Faune Hym., p. 402. 

 Perisemus prolo7igus (Frox.), Ashmead, Monog. N. A. Proc, p. 72. 



Ashmead states that his description is made from the type specimen 

 given to him by the author, but this is evidently an error, as Provancher 

 described the species previous to my correspondence with him, and the 

 type has never been seen by me. The sj)ecimen sent to Ashmead may 

 have been one determined by Provancher, or possibly it was the type of 

 P. formicoides. Provancher, in his description of the species, says : 

 " Wings slightly smoky, the stigma with a pale jDoint at base, the radial 

 cell large, oj)en at the tip, the lobes of the lower wings profoundly 

 divided." He adds, in a note to the description : " Very recognizable by 

 the lobes of the inferior wings." The sj^ecimen described by Ashmead 

 has " wings aborted, not extending to tip of metathorax." In all my 



