ZETHUS. — EUMENES. 333 



594. Zethus ceylonicus, Sauss. Novara Eeise, Hym. p. 5. 



2 . Head, thorax, and abdomen closely and somewhat coarsely 

 punctured and pubescent, the pubescence short, not very dense, 

 rather sparse and thin on the scape of the antennae, the thorax, 

 and legs ; mesonotum with two longitudinal divergent grooves, 

 anteriorly slightly widening and not quite reaching the margin ; 

 median segment almost vertically under the postscutellum, with a 

 broad shallow median groove, having a narrow impressed line 

 down the middle, and transversely striate ; abdomen — the petiole 

 long, grooved above, the rest of the segments suhglobose. Black 

 and shining, the pubescence fuscous, a narrow line on the posterior 

 angles of the pronotum not continued to the front, a minute spot 

 under it, the tegulae and costal and medial nervure of the fore 

 wing at base, and the trochanters, femora, tibiae, and tarsi of all 

 the legs bright ferruginous ; wings fusco-hyaline with a purple 

 effulgence. 



Hah. Barrackpore, Bengal ; Ceylon. $ . Length 11 ; exp. 28 mm. 



595. Zethus dolosus, n. sp. 



Zethus ovanopterus, Bingh. (iiec Sauss.) Jour. Bomb. N. H. Soc. 

 y,p. 244, 2. 



2 . Head, thorax, and abdomen shining, punctured, thinly 

 pubescent ; clypeus broad, convex, arched anteriorly, the punctures 

 line and shallow ; front and vertex more coarsely punctured ; the 

 tegulae and sides of the median segment glabrous ; mesonotum 

 with two parallel impressed lines on the disc; scutellum medially 

 longitudinally grooved ; median segment with a medial broad 

 suloation, which within is finely reticulate and bears a longitudinal 

 carina along the middle, the apex with two obtuse teeth ; petiole 

 densely punctured on the broadened portion and bearing an obscure 

 medial longitudinal carina above ; 2nd abdominal segment finely and 

 sparsely punctured, 3rd broadly smooth and inipunctate at base and 

 narrowly along its apical margin, the middle finely and closely 

 punctured ; remaining segments with a few scattered punctures. 

 Black ; the pubescence fuscous ; the flagellum of the antenna^ dull 

 opaque black : wings fusco-hyaline, darker along the costal margin 

 of the fore wing. 



Hah. Burma (Pegu Hills) ; Tenasserim. $ . Lemjtli 15-10 ; 

 exp. 28 mm. S unknown. 



Genus EUMENES. 



Vespa, pt., Linn. Faun. Suec. p. 415 (17G1). 

 Sphex, pt., Christ, Naturg. Lns. p. 315 (1791). 

 Eumenes, Latr. Hist. Nat. Ins. xiii, p. 344 (1805). 



Type, E. coarctata, Linn. 



Bonf/e. Both hemispheres. 



Head flat ; eyes large, prominent, the sinus in their inner orbits 

 narrow ; ocelli in a broad triangle on the vertex ; antennpe of mode- 

 rate length, the scape long, the flagellum incrassate in the female, 

 th e apex in the male hooked, curved or spirally rolled, inserted in 



