MONOGRAPH OF THE WASPS OF BRITISH INDIA. , 491 



segment depressed in the middle on the apical margin. Shallowly puncr- 

 tured, the enclosed space at the base of the median segment longitudinally 

 striated. ' '■ 



S . Clypeus smooth and shining, longer than broad, truncate at the apex, 

 deeply impressed on the middle of the apical margin, with a minute tooth, 

 on each side. Apical joint of the flagellum strongly curved, scarcely 

 longer than the penultimate. Fifth and sixth ventral segments with a: 

 long spine on each side at the apical angles, the spines of the sixth segment 

 blunt at the apex. Pygidial area large nearly as broad at the apex as 

 long, broadened to the base, truncate at the apex. Enclosed area at the 

 base of the median segment longitudinally striated. 



Habitat— '^imla, (Nurse), c^ ; N. India (Smith), $ . . 



I think I am right in treating these as sexes of one species. Bingham, 

 includes hilaris S in his description of the female, but mentions no. 

 differences. He also gives Madras as a locality, but I do not know on what 

 authority. I-have seen the type of simlaensis, Cam. 



Cerceris humbevtiana Sauafe. 



Cerceris humhertiana Sauss, Reise D. Novara Zool. II. 

 ? Cerceris emortualis Sauss, Reise D. Novara Zool. II. 



$ . Nigra ; primo segmento abdominali rufo-ferrugineo ; clypeo, fronte, 

 pronoto, tegulis, mesopleuris macula, scutello fascia interrupta, post- 

 scutello, segmento mediano fascia longitudinali utrinque, segmentis 2-4 

 fascia lata emarginata vel interrupta, segmento quinto, segmentis ven- 

 tralibus pedibusque flavi ; alis hyalinis, apice valde infumatis ; clypeo lamina 

 porrecta, longitudine vix latiore, apice leviter emarginata ; mesopleuris haud 

 tuberculatis ; segmento mediano area basali nitida ; segmento ventrali 

 secundo area basali elevata nulla ; area pygidiali apice emarginata. 



S . FeminEB similis : segmento primo abdominali nigro ; clypeo apice 

 rotundato, tridentato. 



Long. 5 , 10 mm. ; c? , 9 mm. 



$ . Clypeus with the lamina porrect from the base, scarcely broader at , 

 the base than long, slightly widened to the apex and very feebly emarginate. 

 Antennte inserted more than twice as far from the anterior ocellus as from 

 the base of the clypeus, the second joint of the flagellum about one- 

 quarter longer than the third. Eyes almost parallel, posterior ocelli half 

 as far again from the eyes as from each other. Mesopleurte not tuber- 

 culate ; first abdominal segment more than twice as broad as long ; second 

 ventral segment without a raised area at the base ; pygidial area rugulose 

 almost pointed at the base, widened rather sharply near the base, the sides 

 on the apical half very slightly converging, the apical margin broad and 

 very shallowly emarginate, the area less than twice as long as the greatest 

 breadth. Coarsely punctured ; the enclosed area at the base of the niedian- 



