Mr. R. E. Turner on Fossorial Hymenoptera. 257 



anteiinaft. S'^concl joint of tlie flugelluni equal to the third, at 

 least tluee times as long as the first. Eyes sepaiated on the 

 vertex by a distance slightly greater than the length of the 

 second joint of the tlageiluin. Pronotum depressed below 

 the mesonotuni, a little higher in the middle than at the sides, 

 very sharply sloped. Mesonotuni and scutellum siiining and 

 smooth ; pleurae opaque, almost smooth. Median segment 

 smooth, opaque, without a median line, as long as bioad, tiie 

 posterior slope transversely striated. Abdomen smooth and 

 shining ; pygidial area very long and narrow, with a few 

 minute punctures, the sixth segment as long as tlie fourth 

 and fifth con)bined. Fore tarsi stout, the comb short as 

 compared with most species of the genus. The three 

 absciss* of the radius about equal in length ; first recurrent 

 nervure distinctly nearer to tlie second than to the first 

 transverse cubital nervure. The teguUe are brown at the 

 apex. 



IJal). Yallingup, S.W. Australia, December (^Turner). 



This may be distinguished from other Australian species 

 by the larger size and liighly polished appearance. The eyes 

 are closer to each other on the vertex than in hypoleius, Sm. 



Tachysphex stimulator , sp. n. 



$ . Nigra; segroentis dorsalibus 1-4 fascia apicali argenteo-pilosa ; 



segmeuto mediano transverse ruguloso-striato ; alis fuscis. 

 (5 . Femiuse similis. 

 Long., 5 17 mm., (S 15 mm, 



? . Clypeus shining, irregularly and rather coarsely punc- 

 tured, convex at the base, the apical half depressed and 

 flattened ; apical margin transverse, with two indistinct teeth 

 on each side close to the angles. Front subopaque, minutely 

 punctured, with an indistinct longitudinal sulcus reaching 

 the anterior ocellus. Eyes separated on the veitex by a 

 distance slightly exceeding the combined length of the two 

 basal joints of the flagellum ; the second joint of the flagellum 

 equal to the third and nearly three times as long as the first. 

 Pronotum oblique, depressed below the mesonotuni, some- 

 what higher in the middle than at tlie sides. Pleurje and 

 mesonotum subopaque, microscopically punctured ; median 

 segment opaque, as long as the mesonotum, transversely 

 rngulose-striate, with a shallow longitudinal sulcus from base 

 to apex, the face of the posterior truncation more strongly 

 transversely striated, with a deep sulcus from the base not 

 reaching the apex. Abdomen subopaque above, smooth and 



