64 ENTOMOLOGICAL NEWS. [Feb.,'l6 



Two New Species of Cerceris (Hym., Philanthidae). 



By NATHAN BANKS, East Falls Church, Virginia. 

 Cerceris posticata n. sp. 



$ . Black, with yellow marks. Face, most of the mandibles, two 

 spots on pronotum, tegulae, postscutellum, bands near hind border of 

 abdominal segments, that on first narrowly interrupted, that on second 

 segment very broad and not narrowed in the middle, the others narrow, 

 but widened on sides, lateral spots on second, third and fourth ventral 

 segments, all yellow. 



Antennae rufous, except blackish toward tip above; last joint of 

 antennae barely longer than the preceding, but little curved, third joint 

 plainly longer than the fourth joint. Legs yellow, a black spot on pos- 

 terior side of each femur. Wings dark, stigma yellowish, marginal 

 cell reaches barely beyond the third submarginal cell. 



Clypeus convex, lower edge black, and with three small blunt teeth ; 

 hair-lobes one and one-half times their breadth apart. Enclosure 

 obliquely striate on the sides, middle area smooth, elevated, and with a 

 median groove. 



Abdomen rather broad, basal segment much broader than long; 

 pygidial area about one and one-third times longer than broad, the sides 

 parallel, except converging close to base, tip truncate. Body moderately 

 coarsely punctate. 



Length n mm. 



From Jemez Mountains, New Mexico, n July (Woodgate). 



Cerceris stigmosalis n. sp. 



$ . Black, with white marks. Face, under side of basal joint of an- 

 tennae, base of mandibles, two spots on pronotum, outer part of tegu- 

 lae, postscutellum, band near posterior margin of abdominal segments 

 (except first), that on the second segment broad, barely narrowed in 

 middle, the other bands very narrow, all yellow. Venter without spots, 

 or very small ones. First segment of abdomen sometimes with small 

 spot each side. 



Last joint of antennae no longer than preceding, but little curved, 

 third joint slightly longer than fourth. 



Wings dark, stigma still darker, marginal cell extends plainly beyond 

 the third submarginal cell. Legs pale yellowish, femur of front and 

 middle pairs mostly black, the hind femora black on apical half or two- 

 thirds; hind tibia black near tip; all tarsi mostly rufous. 



Clypeus slightly convex, lower edge truncate, black, and with three 

 small blunt teeth; hair-lobes about twice their breadth apart. Enclos- 

 ure obliquely striate on the sides, a median groove. 



Abdomen moderately broad, first segment a little broader than long; 

 pygidium about one and two-thirds as long as broad, sides parallel, 



