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



legs reddish, paler basally and on the coxa}, and darker toward the 

 tips of the tibiae and femora; antennae with the first five joints ferru- 

 ginous, the next four white and the remainder black. Head transverse. 

 fully twice as broad as thick: above smooth and polished, with fine 

 very scattered punctures. Ocelli placed on a raised triangular tubercle. 

 Eyes elongate oval, twice as long as broad and conspicuously pubescent. 

 Antennae only half the length of the body, stout and involute; 18-joint- 

 ed ; first and second flagellar joints of equal length, each four times as 

 long as broad at tip; third three-fourths as long; fourth two-thirds 

 as long as the third; fifth and following quadrate till the last which 

 is twice as long as the penultimate. Thorax slightly over twice as 

 long as broad. .Mesonotum with a longitudinal slight convexity on 

 each side of the median line; on the sides from near the posterior to 

 near the anterior border with a deep grooved line close to the lateral 

 margin, breaking- into a foveate line anteriorly. Scutellum nearly quad- 

 rate, almost flat, with a deep transverse line across the base. Wing 

 vestiges lanceolate, with the two basal cells well defined ; reaching to 

 the base of the metathorax. Postcutelhnn small, transverse, with a 

 basal impressed line connecting two lateral fovea?,. Metanotum sharply 

 declivous and mediallj- concave behind : the transverse carina complete, 

 strongly curved forward medially and sharply raised on the sides ; 

 lateral and pleural carina distinct, the former giving off inwards at 

 its middle a short transverse carina which extends halfway to the 

 median line. Petiole of abdomen gradually widened behind, without 

 spiracular projections; width at tip a little less than half its length; 

 base nearly half as wide as apex. Third segment a little long-er than 

 the second ; following growing rapidly smaller. Ovipositor somewhat 

 shorter than the first segment. Pleurae very faintly and sparsely punc- 

 tulate ; mesopleura with a small deep fovea behind near its upper 

 edge. Legs strong and stout; longer spur of hind tibia as long as the 

 second tarsal joint and nearly one half the length of the metatarsus. 



Framingham, Mass.. May io, ioio; C. A. Frost. 



The present form comes very close to Microcryptus (Thero- 

 scopus) cingulatus Forst. from the European fauna. It differs 

 in having the head much more finely sculptured than the mesono- 

 tum and in the different color of the legs and abdomen. It is also 

 quite considerably larger. 



