208 EDWARD NORTON. 



20. Nematus pleuricus, n. sp. 



Black; orbits, mouth, jileura, venter and legs whitish. Length O.-^G. Br. 

 wings 0.72 inch. 



9 . Antennns about half the length of body, fuscous beneath, joints 

 cylindrical, slijilitly enlarged at tips, third and fourth joints equal; su- 

 tui-es deep, lower ocellus in a circular depression; nasus hardly incurv- 

 ed; a wide orbital line (interrupted opposite ocelli), space between and 

 all beneath antennae, tegula3, anterior angle, (with a black spot in mid- 

 dle), breast before anterior coxae, pleura, (lower edge straight and 

 sharply defined), a spot on each side of scutel, and a narrow line on 

 sinus between scutel and wings, forming an interrupted band from 

 wing to wing, reddish-yellow; apex of abdomen and venter the same 

 color, the latter blackish toward base ; legs of same color, basal half of 

 coxae and base of femora black ; posterior tibi;« at tip and the tarsi 

 fuscous; inner tooth of claw obtuse, distinct from tip; wings hyaline, 

 stigma and costa white, an emargination at base of stigma. 



Fort Resolution, Great Slave Lake, (K. Kennicott, Smiths. Inst.) 

 One 9 . 



30. N. ventricosus.® 



J\'e/iiain.s (tenfhredo) ventricosuSy Klug, Berl. Mag. 1819. 



Bouche., Nat. Ins. 1834, 140. Larva on cur- 

 rant and gooseberry. 

 Hartig, Aderf. Deutseh. 1837, 196. 

 Xenmfus (tenthrclo) affJnis, Lepol, %, Mon. Tenth. 1823, 69. 

 Neinatiis (tenlhredo) 'S-maculatu.s, Lepel, 9> Man. Tenth. 1S23, 69. 

 Nematuft {tenthredo) grossularice, Dahlb., 1835. Gooseberry. 

 Neinatus {tenthredo) groHsulariatus, Dahlb., 1835. Gooseberry. 

 Nematus rihesii, Stephens, 111. Brit. Ins. Mand. vii, 1835, p. 32. Red currant. 

 Nematus ribis, Leduc, Mem. Soc. Sc. Natur. Seine et Oise ii, 1846. Wliiie 

 and red currants. 



* Having been absent from the time Mr. "Walsh published his description 

 until now, and having no perfect American specimens in my collection, and no 

 time to examine authorities, I give Mr. Walsh's descriptions and conclusions 

 as fully as the space will allow. 



Several specimens, injured on the way, fri>m Prof. WIncholl, agrt>o in the 

 main, but I note several points. In the 9 there is a rufous spot above the eye, 

 j)rolonged down the inner orbit. The anteniue have little if any rufous color, 

 the third joint longest, and a wide semi-obscure band across most of the seg- 

 ment of tcrgum. In the male the spots above the eyes are very obscure and 

 the thorax wholly black, except the tegul.-B and anterior angle, shaded into very 

 obscure ferruginous, where it is palest in the 9 • The inner claw tooth is large 

 and near the tij). 



There is very little duubt that this is a European imj^ortation which has thri- 

 ven, as is not uncommon, even more in this countrj' than at home, in wide sec- 

 tions destroying the currant and gooseberry bushes so as to render them use- 

 less. 



