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



Nysson decoratus, sp. n. 



(J . Niger ; crasse punctatus ; segmentis dorsalibus 1-5 fascia 

 latissima utriuque, segmeuto sexto macula utrinque flavis ; alis 

 fasco-hyalinis. 



2 . Mari simillima ; clypeo margine antico distincte bidentato. 



'S • Clypeiis almost transverse on the anterior margin, 

 without teeth. Tenth joint of" the flagellum as long as 

 broad, eleventh distinctly longer, apical joint about equal to 

 tlie penultimate in length and strongly curved at the apex. 

 The frontal carina is present, but not very strongly developed. 

 Posterior ocelli further from the eyes than from each other. 

 Head and thorax coarsely punctured, the thorax more 

 coarsely than the head, a more finely punctured space on 

 which is situated a small yellow spot behind each of the 

 posterior ocelli. Median segment as long as the scutellum, 

 coarsely longitudinally striated on the basal area, the spines 

 at the apical angles long and covered with dense white 

 pubescence. Second ventral segment strongly rounded, not 

 angular at the base, second to fourth vential segments with a 

 fringe of long grey hairs at the apex. Abdomen very closely 

 and minutely punctured, with sparse larger punctures, the 

 two apical segments more coarsely punctured ; seventh dorsal 

 segment broadly rounded at the apex ; the sixth and seventh 

 with well-marked longitudijial carinse at the sides produced 

 into short spines at the apical angles. Hind tibiae strongly 

 serrate. Radial cell narrowly rounded at the apex ; the 

 cubitus of the hind wing originates far beyond the apex of 

 the anal cell. 



? . Similar to the male, but the clypeus has two distinct 

 teeth near the middle o£ the anterior margin. 



Length, (^ 8 mm., ? 9 mm. 



Hab. Coimbatore, S. India ; July and August. 



The male is the type. 



I^yssoji basalts, Sm. 



Two male specimens in the collection correspond fairly 

 well to Smith's description, but in both the wings are clear 

 hyaline, with a faint fuscous apical margin, and in one 

 specimen the legs are fusco-ferruginous. The clypeus is 

 rather feebly bidentate near the middle of the apical margin ; 

 the frontal carina distinct. The tenth joint of the flagellum 

 is broader than long, the eleventh longer than broad, the 

 apical joint rather strongly curved. Second ventral segment 

 not very strongly rounded, but not angular at the base; 



