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



rather abruptly truncate median segment with a distinct 

 longitudinal sulcus on the dorsal surface. This group is 

 separated from Calopompilus, Ashm., by the bifid tarsal 

 ungues and by (he form of the third cubital cell, which is 

 shorter than the second ; not much longer, as in Calo- 

 pompilus, to which, however, the genus is much more nearly 

 related than to Pseudagenia. 



Less closely related to C. rava, differing in the absence of 

 a sulcus on the median segment and in the coarsely rugose 

 or reticulate sculpture of the dorsal surface of that segment, 

 are the following : — 



2. Cryptosalius coidristans, sp. n. 



$ . Nigra ; propleuris fusco-ferrugineis ; alis fuscis, caeruleo- 



suffusis, anticis macula magna ovata hyalina ante apicem. 

 Long. 15-18 mm. 



? . Olypeus short, slightly convex, broadly truncate at the 

 apex. Head opaque, very closely microscopically punctured ; 

 the front triangularly prominent between the antennae, with 

 a shallow sulcus not reaching the anterior ocellus. Inner 

 margins of the eyes parallel below, distinctly convergent 

 above towards the vertex ; posterior ocelli as far from each 

 other as from the eyes. Antenna? rather stout, a little longer ' 

 than the head, thorax, and median segment combined, the 

 second joint of the flagelluni a little shorter than the third. 

 Temples very narrow. Thorax shallowly and sparsely punc- 

 tured, with close microscopic punctures between; the meso- 

 pleurse coarsely punctured, with irregular ill-defined stria?; 

 the pronotum very broadly arched posteriorly, the sides 

 almost parallel, the anterior margin almost straight ; meso- 

 notum longer than the pronotum ; scutellum with a distinct 

 longitudinal carina, the dorsal surface flat and triangular. 

 Median segment short, much broader than long, the poste- 

 rior slope oblique, not sharply divided from the dorsal 

 surface, without lateral tubercles, the dorsal surface very 

 coarsely rugose-reticulate, the posterior slope strongly trans- 

 versely striated, the sides of the segment more finely and 

 irregularly vertically striated. Abdomen opaque, somewhat 

 elongate; the sixth tergite elongate-triangular, narrowly 

 rounded at the apex ; the transverse sulcus of the second 

 sternite situated very mar the base. Second abscissa of the 

 radius at least half as long again as the third, the fourth a 

 little longer than the second ; submedian cell much longer 



