72 Bulletin Wisconsin Natural History Society. [Vol. 8, No. 2. 



bases of the antennae. Head below punetulate except on a very finely 

 roughened malar line from the lower corner of the eye to the base of 

 the mandible. Clypeus at each side with a small deep fovea, its surface 

 with scattered coarser punctures. Palpi short and stout, strongly 

 hairy. Eyes oval, one-half long-er than the malar space. Thorax about 

 two and one-half times longer than broad. Pronotum visible in front, 

 rather broad on each side at the humeri, rugulose or punetulate like 

 the head. Mesonotum narrowed, nearly wedge-shaped in front, one- 

 fourth longer than wide ; more roughly sculptured than the head. 

 Scutellar suture indicated by a short transverse grooved line which does 

 not attain the margin of the mesonotum, scutellar space convex. Meso- 

 notum with a raised marginal line behind the tegula? and also behind 

 on each side for one third of its width. Metanotum finely rugnlose 

 on its anterior half which bears a median depression that divides it 

 into two quite distinct lobes. Behind this portion and in front of 

 the transverse carina it is faintly and finely reticulate. Transverse 

 carina very strongly sinuous ; posterior slope smooth except for a 

 number of irregular, mainly longitudinal wrinkles. Abdomen stout, 

 twice as wide as the thorax, its surface behind the shagreened second 

 segment shining and smooth; its hairs sparsely placed. Petiole scab- 

 rous, three times as broad at tip as at its narrowest part near the 

 base ; spiracular tubercles strongly projecting. Second and third seg- 

 ments subequal ; fourth two thirds as long as the fifth ; following 

 growing rapidly shorter. Ovipositor as long as the second segment. 

 Pleura? rugose-reticulate. Legs stout, long-er spur of hind tibia one- 

 third the length of the metatarsus. 



Forest. Hills, Boston, Mass., April io, 1909, reared from the 

 egg capsule of a spider. 



Pezomachus habilis sp. nov. 

 Female. Length 3 mm. Body shining throughout, black; antennas 

 \ellowish at the base, darker medially and fuscous toward the tips; 

 mesonotum brownish at the sides; metathorax above ruf o-piceous ; 

 band at tip of first and second abdominal segments yellowish; trochan- 

 ters, four anterior femora below and all tibiae and tarsi yellowish 

 brown. Head above shagreened and subopaque, fully twice as broad as 

 thick and deeply excavated on the occiput. Ocelli in a rather small 

 triangle, the lateral ones closer to the median ocellus than to the eye 

 margin. Front slightly narrowed above, one-half wider than the eye. 

 Malar line half as long as the width of the face ; clypeus unusually 



