110 Mr. R. E. Turner on Fossorial Hymenoptera, 



9 . Clypens broadly truncate at the apex, clotlied with 

 silver pubescence. Head opaque, finely punctured ; eyes 

 separated at the base of the clypeus by a distance about equal 

 to three times the length of the scape, but by only about half 

 that distance on tlie vertex ; second joint of the flagellum 

 distinctly longer tiian the third and about twice as long as 

 the first ; posterior ocelli about twice as far from each other 

 as from the eyes. Thorax subo[)aque, finely and closely 

 punctured ; the pronotum transverse, a little depressed on 

 the posterior margin. Median segment very coarsely longi- 

 tudinally striated ; the sides of the segment finely hori- 

 zontally striated, with fine punctures between the striae ; 

 posterior slope transversely striated, with a deep median 

 sulcus. Abdomen shining, very finely punctured, the seg- 

 ments rather feebly depressed at the apex ; second ventral 

 segment more sparsely punctured in the middle than on the 

 sides; the apical angles of the dorsal segments with a little 

 white pubescence. First recurrent nervure received close to 

 the apex of the first cubital cell, second at the apex of the 

 secotid cubitnl cell, almost interstitial with the second trans- 

 verse cubital nervure. Third cubital cell shorter on the 

 radius than the petiole of the second cubital cell. 



H<ih. Nyasaland, Mlaiije [8. A. Neave) ; February. 



Differs from all other species known to me by the very 

 strong longitudinal striation of the niedian segment. 



Pison strigulosum, sp. n. 



o. Nigra; fronte argenteo-pubescente ; mandibulis, femoribus 

 apice, tibiis tarsisque ferrugineis ; tegulis testaceis ; aHs hyalinis, 

 iridesceutibus, venis nigris, segmeuto mediano basi oblique, apice 

 transverse striate. 

 Long. 8 mm. 



$ . Clypeus without a carina, broad, the apical margin 

 slightly oblique on the sides and forming a distinct angle in 

 the middle. Head opaque, a distinct frontal sulcus reaching 

 the anterior ocellus. Front broad, the eyes at the base of 

 the clypeus more than half as far again from each other as 

 on the vertex. Posterior ocelli nearer to the eyes than to each 

 other ; second joint of the flagellum distinctly longer than 

 the third. Thorax minutely and closely punctured, the 

 pronotum and mesopleurae clothed with short silver pubes- 

 cence. Median segment obliquely striated at the base, the 

 strise becoming rather finer and more transverse towards the 

 apex, the apical slope coarsely transversely striated ; at the 

 base of the segnient is a very small triangular space enclosed 



