THE CANADIAN ENTOMOLOGIST. 369 



Macremphytus also prevents its confusion not only with Harpiphorus, but 

 also with the genus Emphytus and the genera allied to it. 



Strongylogaster, Dahlb. — Dahlbom in his " Cofispecius Tenthre- 

 dinidum, Siricidian et Orysshiorum Scandinavice. quas Hymenopterorum 

 Familias" published in the Kongl. Svenska, Vertens. Acad. Handlg. for 

 the year 1835, gives a list of the species of Tenthredinoidea of the 

 Scandinavian peninsula, in which he has introduced several new names, 

 but has not appended any descriptions. The genus Strongylogaster is 

 such an one. Dahlbom included under this name filicis, Klg.; mixta, 

 Klg., and cingulata, Fab. Mixta is congeneric with contigua, Knw., 

 which belongs to the genus Thrinax, Knw.; contigua should be taken as 

 the type of this genus. Ashmead has made filicis, Klg., the type of 

 Polystichophagus, Ashm. This leaves only cingulata. Fab., for Strongy- 

 logaster, which becomes type by elimination. This leaves the American 

 species of Strongylogaster in which the free part of 2nd A is present to be 

 provided for ; they belong to Ashmead's genus Strongylogastroidea, of 

 which Strongylogaster apicalis, Say, is type. 



Strongylogastroidea spiculatiis, n. sp.— Body black, with the following 

 parts white ; the clypeus, the labrum, the four apical segments of the 

 antennae, the tegulse, a very narrow line on the collar, the posterior coxae 

 in great part, the trochanters, and the scutellum ; with the following parts 

 rufous : the head except the ocellar and postocular areas and the lower 

 half of the antennal furrow, the prothorax at sides, the median lobe of the 

 mesonotum, an irregular spot on the mesopleura, ihe abdomen except 

 the saw-guides, the front and middle legs beyond the middle of the femora, 

 and the posterior tibiae and tarsi ; the anterior ocellus is situated in front 

 of a distinct angularly diverging ridge ; the saw guides with the upper 

 margin straight, the lower margin semi-straight, roundly and obliquely 

 truncated and pointed at apex. Length, 1 1 mm. 



Habitat. — EUenville, N. Y. Chester Young, collector. 



Strongylogastroidea conftisa, n. sp. — Body rufous, with the following 

 parts white : a narrow line on the collar, the scutellum and postscutellum, 

 the apices of the coxae, and the trochanters ; with the following parts 

 black : a spot surrounding the ocelli, a small spot on the middle of the 

 postocular area, the lateral lobes of the mesonotum, the prothorax in great 

 part, the pectus and the bases of the coxae; the saw-guides concave above, 

 convex below, the apex almost squarely truncate. Length, 9 mm. 



Habitat.. — West Springfield, Mass. J. O. Martin, collector. 



