Mr. K. E. Tinner on Fossorial Ilymenoptera. oil 



2 . ^'ig^a, nitida, sparsissime punctata ; segraento dorsali secundo 

 carinis 5 transversis ; area pygidiali angvista ; segmento ventrali 

 quinto rugoso. 

 Long., cJ 17, 2 11 mm. 



$ . Clypeus closely punctured, Avidely and rather shallowly 

 eniarginate at the apex. Head, thorax, and abdomen closely 

 hut not coarsely punctured, with sparse white pubescence. 

 Antennae short, scarcely as long as the thorax and median 

 segment combined, slightly narrowed to the ap3x ; the 

 interantennal prominence broadly rounded at the apex. 

 Anterior angles of the pronotum not produced ; scutellura 

 separated by a fovea from tlie mesonotum, with a low carina 

 from the base to the apex ; median segment rounded. Abdo- 

 minal segments constricted at the base ; the first segment 

 broader at the apex than long and marked w ith a longitu- 

 dinal sulcus from the base to beyond the middle. Sixth 

 dorsal segment very coarsely punctured, rounded at the 

 apex ; hypop\ gium transversely striated above, elongate- 

 triangular, with an acute apical spine, the basal angles 

 strongly produced into blunt teeth. Third abscissa of the 

 radius longer than the second ; first recurrent nervurc 

 received beyond the middle of the second cubital cell, second 

 at two-sevenths from the base of the third cubital cell. Ante- 

 rior coxae very slightly concave ; the spur of the anterior 

 tibiae testaceous, 



? . Head moderately convex, shining and sparsely punc- 

 tured, with a short shallow frontal sulcus, nearly half as 

 broad again as long, slightly narrowed anteriorly and strongly 

 rounded at the posterior angles ; the clypeus without a 

 carina, the anterior margin straight. Pronotum distinctly 

 broader than long, the anterior margin slightly arched, finely 

 and sparsely punctured, with a few deep setigerous punctures 

 along the anterior margin. Scutellum and median segment 

 rather more strongly punctured, the median segment scarcely 

 longer than the scutellum, broadened and very steeply sloped 

 posteriorly. Abdomen shining, sparsely punctured ; first 

 dorsal segment with a wide groove between two transverse 

 carinse at the apex ; second segment with five strong trans- 

 verse carinae, including the raised apical margin ; fifth 

 ventral segment coarsely rugose. Pygidium narrowed at 

 the base, fully three times as long as the greatest breadth, 

 the dorsal plate shorter and narrower than the ventral, 

 marked with an obscure longitudinal carina, the ventral 

 plate rounded at the apex, a tuft of pale fulvous hairs on 

 each side before the apex. 



Ann, & Mag. N. Hist. Hcv. «. Vol. x. 37 



