THE CANADIAN ENTi3]VI0L0GlST. 119 



Abdomen ovare, polished, short petiolate, black, except the greater part 

 of the first segment and the extreme tip, which are black ; second, third 

 and fourth segments sub-equal in length. Legs rufous, the tarsi lighter ; 

 femora, especially the anterior pair, very stout ; anterior tarsi chelate, 

 first joint long ; anterior femora with a black mark below at the base, tips 

 of posterior femora and tibi* also black. Wings hyaline, with a fuscous 

 band just beyond the stigma, also a faint fuscous spot at the apex of the 

 second basal cell, stigma lanceolate. 



Described from a single female specimen collected at Mosholu, N.Y., 

 July 25, 1903, by Mr. J. R. de la Torre Bueno. 



This species may be distinguished from the only other described 

 species of Bacchus (B. jflavicollis, Ashm.) by its colour, larger size, 

 different length of abdominal segments and configuration of the antennte. 

 It agrees very well with the generic diagnosis given by Ashmead (Monog. 

 Proctotrypidje, p. 91). 



Oxylabis bifoveolatus, sp. nov. — Male. Length, 3 mm. Black ; 

 legs fuscous, varied with rufous. Head shining black, rugulose on the 

 occiput, with a short impressed longitudinal line above the ocelli ; head 

 margined behind ; cheeks shagrcened ; mandibles dark fuscous. Antennse 

 14-jointed, distinctly longer than the body, tapering toward the tips ; two 

 basal joints black, the rest fuscous. Scape very short, twice as long as 

 the pedicel, which is less than one-half as long as the first flagellar joint ; 

 first eleven flagellar joints of equal length, the last one and one-half times 

 as long as the preceding and more slender. Sides of the pronotum 

 coarsely and obliquely striate. Mesonotum with two deep furrows, less 

 pronounced anteriorly, and with a triangular fovea just before the 

 scutellum. Scutellum with two deep fovea-. Post-scutellum with a 

 median groove and a more delicate one on each side ; its tip produced 

 into a long, acute black spine, which is perpendicular to the posterior 

 face of the metathorax. Metanotum anteriorly coarsely rugose-striate, at 

 the middle with a widely-interrupted transverse furrow, behind this with a 

 fovea on each side, and medially at the tip with a large enclosed space. 

 Petiole on abdomen suddenly constricted in front, a little wider than long 

 and coarsely fluted. Remainder of abdomen compressed and very 

 shining, impunctate ; second segment very long, others short. Legs 

 fuscous ; front tibite, knees and bases of the tarsi lighter. Wings 



