NO. 2219. A REVISION OF THE CREMASTINI—CVSIIMAN. 519 



throughout; notauli deep anteriorly; scutclhim less strongly convex, 

 with strong lateral carinae extending to apex; areola relatively 

 slightly shorter, nearly without rugae, other areas simply punctate; 

 hind basitarsus three-fifths as long as tibia, last joint distinctly more 

 than half as long as third; second recurrent not nearly interstitial, 

 narvellus rather strongly antefurcal. Abdomen hardly twice as long 

 as head and thorax; petiole with dorso-lateral carinae developed 

 toward apex, subparjillel-sided, longitudinally aciculate, its spiracles 

 slightly before middle, ovipositor somewhat more than twice as long 

 as first tergite. 



Rufous with mandibles, palpi, scape below (orbits not pale) tegulae, 

 and legs, except hind tibiae and tai-si, paler; antennae, occiput, 

 ocellar triangle, a spot above each antenna, longitudinal spot on 

 prescutum, area surrounding scutellum, triangular spot on propodeum 

 reaching to apex of areola, prepectus, fii-st three tergitcs at base, 

 sixth entirely, and venter black or piceous; hind tibiae subannulato 

 with fuscous at apex and near base, hind tarsi fuscous, pale at base 



Type-locality. — Milwaukee, Wisconsin. 



Type.— Cat. No. 20255, U.S.N.M. 



Described from a single female. 



CREMASTUS (CREMASTUS) GRACILIS, new epecies. 



Female. — Length 9 mm., antennae (broken), ovipositor 3 mm. 

 Closely related to ruficeps Cushman, with which it agrees in most of 

 the characters distinguishing that species from longiventris Cush- 

 man, but differing principally as follows: Temples more strongly 

 rounded; clypeus straight in profile, about three-fourths as long as 

 interfoveal line, strongly, evenly rounded at apex; mandibles nar- 

 rower at apex; malar space distinctly less than basal width of 

 mandible; eyes as long as greatest width of face; lateral ocellar, 

 postoccllar, and ocell-ocular fines in proportion of 1:2:1.5, ocelli 1.25; 

 sternauli strong; scutellum with carinae not extending to apex; 

 propodeum with carinae weaker, that separating areola and petiolar 

 area subobsolcte; nervellus very slightly postf ureal; abdomen almost 

 exactly twice as long as head and thorax; second tergite distinctly 

 less than four times as long as basal width, distinctly wider at apex, 

 spiracles in middle; ovipositor almost exactl}^ twice as long as first 

 tergite. 



Paler testaceous with pale color of head and its appendages, 

 including anterior and lower orbits, yellow; legs pale testaceous, tho 

 entire front legs, middle coxae, middle and hind trochanters being 

 nearly yellow, and the hind tibiae and tarsi infuscated, tho former 

 paler in middle; antennae brown; dark color of head confined to 

 occiput and ocellar triangle; thorax slightly paler anteriorly but 

 without markings; dark color of abdomen confined to median basal 

 spots on tergites 2 to 6, that of the fourth very weak. 



