1910] Brues, North American Parasitic Eymetioptera IX. 73 



transverse, with the usual fovea at each lateral angle. Cheeks shining, 

 but faintly shagreened. Antennae 20-jointed, slender, the joints all 

 distinctly wider than long. First flag-ellar joint one-fourth longer 

 than the second, following- gradually decreasing to the tip, those at 

 the apical third one-fourth longer than thick. Thorax above sha- 

 greened or punctulate ; slightly shining, more distinctly so on the 

 posterior half of the metanotum. Mesonotum scarcely longer than 

 wide, the scutelluni represented by a very small convex tubercle ; 

 marginal carina at posterior angles of mesonotum poorly developed. 

 Metanotum strongly convex on its anterior half, the transverse carina 

 not sinuate medially, curving evenly over the metanotum from near 

 the base of the coxa ; no lateral carina. Petiole of abdomen short and 

 broad, only one half longer than broad, the tip twice as wide as the 

 base and the spiracular tubercles large, angularly produced. Second 

 segment only slightly longer than the third, fourth or fifth which are 

 subequal. Ovipositor slightly longer than the petiole of the abdomen. 

 Entire pleurae evenly punctulate and subshining. Legs slender, the 

 longer spur of the hind tibia? one-third the length of the metatarsus 

 which is two and one-half times as long as the second tarsal joint. 

 Abdominal hairs sparsely placed. 



Woods Hole, Mass. 



This species is very similar to P. maculicollis Brues in the 

 form of the antenna? and metanotal carina, hut has strongly pro- 

 jecting spiracles on the petiole of the abdomen which are entirely 

 absent in the other species. 



Pezomachus foveatus sp. nov. 



Male. Length 3.5 mm. Black. Antenna? pale brown, fuscous 

 toward tips. Legs, including coxw, pale brown ; more or less infuscated 

 on the four anterior femora medially, on the hind coxa? above and on 

 the posterior legs except the trochanters, knees, middle of tibiae along 

 outer edge, and base of each tarsal joint. In some specimens with the 

 four anterior legs quite or nearly as dark as the posterior pair. Head 

 shagreened and subshining above, twice as wide as thick ; seen from 

 the front with the front above the antenna? fully oneThalf wider than 

 either eye. Malar space with a slight carina from the corner of the 

 eye to the base of the mandible. Cheeks more nearly smooth than the 

 vert-ex : face and clypeus sculptured like the vertex. Antennae moder- 

 ately long, equalling the body in length ; 21-jointed ; first flagellar 

 joint four times as long as thick and one-third longer than the s?cond: 



