94 Mr. It. E. Turner on Fossorial llymenoptera. 



the whole, I am inclined to think that the two forms should 

 stand as distinct species. 



Subfamily Lambing. 



Tachytes diversicornis, sp. n. 



cf . Niger, albo-pubescens ; flagello articulis 5-9, articuloque 

 quarto subtus fulvis ; tarsis brunneo-rufescentibus ; segnientis 

 dorsalibus 4 basalibus fascia apicali argenteo-pubescente ; seg- 

 meuto septimo dense argeuteo-pubescente ; alis hyalinis, venis 

 tegulisque testaceis. 



2 . Mari simillima ; anteunis nigris ; segmento dorsali sexto 



aureo-pubescente. 

 Long., cf 9 mm., 2 10 mm « 



<$ . Clypeus very broadly rounded at the apex, clothed 

 with silver pubescence, which extends on to the face ; joints 

 of the flagellum not arcuate. Eyes separated on the vertex 

 by a distance fully equal to the combined length of the two 

 basal joints of the flagellum. Thorax and median segment 

 clothed with short whitish hairs ; the median segment 

 scarcely as long as the scutellum and postscutellum com- 

 bined. Seventh dorsal segment broadly rounded or sub- 

 truncate at the apex ; eighth ventral segment strongly 

 emarginate, the apical angles of the emargination produced 

 into acute spines. Radial cell narrowly rounded at the 

 apex, third abscissa of the radius longer than the second, 

 the third cubital cell extending on the cubitus beyond the 

 apex of the radial cell. Basal joint of tlie fore tarsi with 

 three small white spines. 



? . Basal joint of the fore tarsus with five spines. Second 

 ventral segment subopaque, microscopically punctured, the 

 apical margin broadly smooth in the middle ; pygidial area 

 subtriangular, narrowly rounded at the apex. 



Hah. Karachi (E. Comber), September and October. 



This approaches the Algerian T. maculicornis, Saund., 

 but in that species the male has the joints of the flagellum 

 thickened and arcuate beneath. In both species the inter- 

 mediate metatarsus of the male is curved and somewhat 

 strongly asymmetrical at the apex. The female of maculi- 

 cornis has the pygidial area clothed with silver pubescence. 



Tachytes nilotica, sp. n. 



2. Nigra, albo-pubescens ; mandibulis, palpis, femoribus, tibiis 

 tarsisque ferruginois ; femoribus anticis basi nigro suffusis ; 



