76 Bulletin Wisconsin Natural History Society. [Vol. s . No. :.'. 



posterior slope of the metanotum shining. Metathorax with a sinuous 

 transverse carina which continues back to near the base of the coxa, 

 but without any indications of areola? at its lower hind angles. Abdo- 

 men nearly twice as long- as the thorax, the petiole a,s long- as the 

 metathorax. Petiole gradually widened to the tip which is two and 

 one-half times as broad as the base; laterally with a carina including 

 the spiracles, which do not project as tubercles when seen from above. 

 Petiole shagreened and subopaque ; second segment less opaque : follow- 

 ing segments growing smooth and shilling; second and third segments 

 subequal ; fourth and fifth each half as long. Hairs on surface of 

 abdomen very closely placed. Ovipositor one and one half times as 

 long as the petiole of the abdomen. Pleura?, shagreened and subopaque 

 like the thorax above. Legs long and slender, only the four anterior 

 femora slightly thickened. Longer spur of hind tibia one third as long 

 as the metatarsus which is slightly over twice as long as the second 

 tarsal joint. Thorax, legs and first two segments of abdomen dull 

 ferruginous, head and base of antennae fuscous: remainder of antenna? 

 and abdomen beyond the base of the third segment piceous. 



Mount Constitution, San Juan Co., Washington ( A. L. Melan- 

 der ) ; July 1908. 



This resembles P. insolens quite closely, but differs by its lon- 

 ger and much more slender antennae and the densely placed ves- 

 titure of the abdomen. 



Pezomachus texanus Cress. 

 Canadian Put., Vol. 4, p. 64. (1872). 



This species differs in both sexes from any other Pezomachus 

 known to me by the small size of the mesonotum. In the female 

 this is scarcely more than one third as long as the metathorax, 

 and in the male only half as long being considerably shorter than 

 the pronotum in this sex and broadly enclosed by it on the sides. 

 Both sexes have the metanotum smooth, without carinas, and the 

 hairs on the abdomen very sparsely placed. The head of the 

 male is only one and one-half times as broad as thick, and scarcely 

 at all excavated along the occipital margin. 



Pezomachus wheeleri Ernes. 

 Trans. Amer. Ent. fioc. Vol. 29, p. 123. (1903). 

 In this species the abdomen is clothed with very dense hairs, 

 and the scutellum is faintly indicated as rather small and strongly 

 transverse. 



