138 THE CANADIAN ENTOMOLOGIST 



Neopus MacG. — Front wings with the radial cross-vein, the 

 radio-medial cross-vein, the free part of R.4 and Ro all present; 

 the medio-cubital cross-vein joined to R+M a considerable distance 

 before the origin of M ; Sci obsolete on its costal half, located near 

 the medio-cubital cross-vein; the free part of the second anal vein 

 short, erect, and transverse; the contraction of the third anal vein 

 indicated; hind wings with the free part of R4 and the transverse 

 part of M2 wanting; antennae with nine segments; the clypeus 

 emarginate; compound eyes with their inner margins straight and 

 parallel and distant; the basal plates divided; the claws cleft. 

 Type, Tenthredopsis 1 ^-punctatiis Norton. 



This genus is related to Tenthredopsis. This name was first 

 used in Smith's Report of the Insects of New Jersey, 1910, p. 585, 

 where it is properly accredited. Mr. S. A. Rohwer, in a paper on 

 the genera of the Tenthredinoidea, has accredited this name and 

 some others by the writer, used for the first time in this list, to 

 Mr. H. L. Viereck. It is unfortunate that such references should 

 have been used in a paper of this sort. Mr. Rohwer's conclusions 

 in respect to the authority for these names is discussed by Mr. 

 Viereck in the Proceedings of the Entomological Society of Wash- 

 ington, Vol. 13, 1911, p. 94. 



Tenthredo neoslossoni, n. sp. — Female: Body black, with 

 the following parts yellowish white: the clypeus, the labrum, 

 mandibles at base, spot on the supraclypeal area, the collar, the 

 scutellum, a spot above the posterior coxae, the sides of the basal 

 plates, and the tarsi, yellow; the following parts rufous: the anten- 

 nae, a minute spot on each inner orbit, the tegulae, the front femora 

 beneath, the front and middle tibiae, the basal three-fourths of the 

 hind tibiae, and abdominal segments two to four; antennae with the 

 third segment distinctly longer than the fourth; the clypeus deeply 

 emarginate; the head and thorax roughened; the wings yellowish, 

 the veins, including the costa and stigma brownish ; the saw-guides 

 bluntly rounded at apex. Length 10 mm. 



Habitat. — Franconia, New Hampshire, Mrs. Annie Trumbull 

 Slosson, Collector, for whom the species is named. 



This species belongs to the mellina and redimacula group. 



