Hymenoptera Orient alls. 261 



cubital cellule twice longer than wide ; the recurrent nervure 

 received in the basal third. Length 8 — 9 mm. 



The spines on the mesosternum separate readily this 

 distinct species. 



Cerceris sulphurea, sp. nov. (PL X., f. 11, <z, b). 



Sulphureous ; the ocellar region and three lines on the 

 mesonotum, sordid rufous ; wings clear hyaline, the apex 

 from a little before the end of the radial cellule fuscous, 

 the nervures fuscous ; the flagellum of the antennae pale 

 rufous. Clypeus convex, broadly rounded at the apex. 

 Eyes slightly diverging ; posterior ocelli separated from 

 each other by the length of the third and from the eyes by 

 the length of the first antennal joint. The third antennal 

 joint only a little longer than the fourth. Body covered 

 with long white hair ; that on the face silvery. Punctuation 

 moderately strong. Trigonal area punctured. Petiole 

 nodose, longer than broad. Pygidial area broad, but longer 

 than broad, punctured, the apex bluntly rounded. Second 

 cubital cellule not much longer than broad ; the first 

 recurrent nervure almost interstitial. $ . Length 8 mm. 



Cerceris tetradonta, sp. nov. (PL X. f. 12, a, b). 



Black, closely and rather strongly punctured, the 

 clypeus, the cheeks broadly from near to the top of the 

 antennal ridge, the antennal ridge ; scape beneath, the 

 base of the mandibles ; two small spots behind the 

 ocelli, a large line behind the eyes, a broad line on the 

 side of the pronotum, a mark on the side of the scutel- 

 lum, metanotum, two large marks on the sides of the 

 median segment, tegulae, tubercles, a small spot below them, 

 the sides of the petiole, and a short line on the edges of the 

 other segments and on the edges of the third to fifth 

 ventral segments, whitish-yellow. Ocelli not forming a 

 triangle ; the outer separated from the eyes by a little more 



