Mr. R. E. Tunicr on Fossorial llymenoptera. 307 



Ampulex approximata, sp. n. 



$ . Nigra ; mandibulis, clypeo apice, scapo subtus pygidioque 



obscure fusco-ferrugineis ; alls hyalinis, venis fuscis. 

 Long. 10 mm. 



? . Clypeus strongly convex, with a median carina, pro- 

 duced into a tooth at the apex, with a smaller tooth on each 

 side. Head subopaque, microscopically punctured, the 

 frontal carinae very short, the median one scarcely developed 

 and continued by a narrow and shallow sulcus which is lost 

 halfway between the base of the clypeus and the anterior 

 ocellus, the lateral carinse extending very little above the 

 base of the antennae. Second joint of the flagellum nearly 

 twice as long as the third. Eyes separated on the vertex by 

 a distance equal to the length of the second joint of the 

 flagellum ; posterior ocelli nearer to each other tlian to the 

 anterior ocellus. Thorax shining, very minutely punctured ; 

 the pronotum convex, longer than the breadth in the middle, 

 with a narrow median sulcus from the base not reaching 

 the apex, without a tubercle ; mesonotum with an obscure 

 median sulcus and a much deeper sulcus on each side, be- 

 tween which and the tegulse is a deep depression. Scutellutn 

 with a depressed transverse row of very deep punctures at 

 the base. INIedian segment longer than broad, with a distinct 

 median carina and two slightly oblique lateral carinse on 

 each side, the space between the cariuai transversely striated, 

 the distance between the cariuae at the base of the segment 

 almost equal, the posterior angles of the segment without 

 spines. The narrow petiole of the first abdominal segment 

 is considerably shorter than the broadened portion of the 

 segment; second segment distinctly longer than broad, the 

 ventral surface rather strongly convex. The third dorsal 

 segment has fine white pubescence at the base, the apical 

 segment compressed laterally. Fourth tarsal joint reaching 

 to the middle of the apical joint. Two cubital cells ; the 

 second abscissa of the radius a little longer than the first, 

 the third half as long as the second. 



Hub. W. India, Bombay Presidency. 



Nearly allied to the European A. fasciata, Jur., from 

 which it diifers in the sculpture of the metiian segment, on 

 which the carinas are strongly developed, in the greater 

 length of the second cubital cell, the almost complete absence 

 oi: fuscous colouring ou the fore wing, and the greater 

 proportionate length of the second abdominal segment. 



