116 Bulletin Wisconsin Natural History Society. [Vol. 7, Nos. 3-4. 



from the posterior margin of the head ; ocelli in a small, transverse 

 triangle. Antennae three-fourths the length of the body rather thick- 

 ened basally, 13-jointed ; basal eight joints of the flagellum each with 

 a sharp tooth above, and the ninth with a less distinct one. Scape 

 scarcely twice as long as broad and quite distinctly shorter than the 

 first flagellar joint; following flagellar joints very slightly decreasing 

 in length more distinctly so near the base ; apical joint nearly one-half 

 longer than the penultimate ; the first joint about three times as long 

 as thick at the apex and the second about the same. Thorax rather 

 slender, especially in front; mesonotum shining, very slightly pilose; 

 scutellum strongly convex, the transverse depression at its base broad 

 and deep. Metathorax nearly twice as long as high, sharply rounded 

 behind ; its surface coarsely rugose reticulate ; with a smoother space 

 above near the base ; median carina very short, a lateral one on each 

 side indicated at the extreme base. Pleura? smooth and shining; 

 mesopleura behind with a crenate margin. Tegulce dark ferruginous. 

 Abdomen as long as the head and thorax; petiole coarsely longitudin- 

 ally striated; second segment with a row of very short striae or pits 

 at the base; apical abdominal spines large, black. Legs slender, fer- 

 ruginous, the four posterior coxae, and the base of the anterior ones 

 black. Inner spur of posterior tibia one-half the length of the slender 

 metatarsus. All tarsal clawis sample. Wings subhyfaline, slightly 

 brownish, with faint traces of discoidal veins. Stigma and veins 

 piceous, the marginal cell scarcely one-fourth the length of the stigma. 



Three specimens, two from the slope of Mount Constitution 

 on Orcas Island, San Juan Co., Wash., and the other from one 

 of the islands in Puget Sound without further data. All were 

 collected during July. 



This species is distinguishable by its dentate first flagellar joint 

 and by metathoracic characters. 



Proctotrypes simplicior sp. nov. 

 Male. Length 2.5—3.5 mm. Black, legs except coxae red- 

 dish yellow or dull ferruginous. Head transverse, two and one-fourth 

 times as wide as thick ; smooth and shining black, but quite noticeably 

 pubescent. Front with a very slight short carina between the anten- 

 nae; face evenly and but little convex. Mandibles and palpi piceous. 

 Eyes bare ; oval, separated by their own width from the posterior mar- 

 gin of the head. Antennae 13-jointed, about four-fifths as long as the 



