18 THE CANADIAN ENTOMOLOGIST. 



Pachyntmatus vernalis, n. sp. — 9. Length, 5 mm.; length of 

 anterior wing, 5 mm. Robust, head nearly as wide as thorax, rather 

 sparsely, finely punctured: enlarged behind eyes; ocellar furrows extending 

 below ocelli, a middle furrow from lower ocellus ; ocellar basin indistinct, 

 frontal crest formed of a wavy ridge above antennae, slightly broken in the 

 middle; third, fourth and fifth antenoal joints equal; antennie slender, 

 nearly as long as insect, covered with short hairs ; middle fovea rather 

 large, shallow, round; clypeus shallowly, circularly emarginate; mesonotum 

 and scutellum rather finely punctured, inner claw tooth large, near apex 

 (near the apex and longer on the anterior legs); second cubital cell small, 

 subquadrate ; second recurrent quite free from second transverse cubitus ; 

 stigma widest at base, gently tapering to apex ; upper discal cell of hind 

 wings slightly exceeding lower, much nanower than lower ; sheath broad, 

 rounded on lower margin, straight en upper; cerci short, stout. Colour 

 reddish-brown ; antennae above at base, eyes, elongate spot on lateral lobes 

 of mesonotum^ posterior third of scutellum, spot on metanotum, black; 

 wings hyaline, iridescent ; nervines brown, costa and stigma yellowish. 



Habitat — One 9 labelled as follows : " Saw-fly on Willow, 



Oct. 5, '89. 



Feb. ro, '90." Probab ; y 

 from Lincoln, Nebr., and raised from a larva on the Willow. Type in the 

 University of Nebraska. 



The size of the claw and its position makes the generic position of 

 this species open to question. After examining it carefully with the com- 

 pound microscope, I think it is a J'achynematus. In Marlatt's table, fir 

 Pachyncmatus it runs to aurantitnus, Marl., but is quite distinct from that 

 species, being known by the slightly broken frontal crest, the shallowly 

 emarginate clypeus, cerci short and stout, head without black, etc. It is 

 not close to any Pteronus. In Amauronematus it is closely related to 

 brunneus, Nort , and Dyati, Marl., but it is neither of these species. 



Amauronematus. xanthus, n. sp. — 9 . Length. 7 mm.; length of 

 anterior wing, 6^ mm. Head densely, finely punctured, opaque; frontal 

 furrows not clearly defined, not reaching occiput, but reaching antennal 

 foveae; ocellar basin well defined, walls rounded; frontal crest rather 

 strong, slightly broken in the middle ; middle fovea elongate, broader 

 below ; antennte rather stout, joints three, four and five equal ; clypeus 

 rather deeply emarginate, lobes bioad, more or less rounded; thorax above 

 not as densely punctured as head ; mesopleura and mesopectus not so 



