MONOGRAPH OF THE WASPS OF BRITISH INDIA. 8ir 



Clypeus with the lamiila incised or bidentate 



at the apex ; petiole broader than long . . 2 



2. Lamina of clypeus porrect at apex and 



incised.. .. .. .. .. .. C.fevodorTnxn. 



Sarawak. 

 Lamina of clypeus not porrect, truncate, with 



two strong median teeth . . . . . . C shelfordi Turn. 



Sarawak. 

 Cerceris ferociov, sp. n. 



5 . C. shelfordio colore affinissima ; clypeo lamina apicali libera, 

 porrecta, apice emarginata ; mesopleuris tuberculatis, spina minuta armatis;- 

 segmento mediano area cordata basi oblique, apice transverse striata y 

 segmento abdominali primo latitudine fere aequilongo. 



Long. 13 mm. 



2 . Head very broad, twice as broad as the thorax ; clypeus with the 

 lamina free from a little before the apex, porrect and deeply and widely 

 incised at the apex. Outer lobes of the clypeus very broad, with a tooth 

 at the inner apical angle. Antennee inserted about one-quarter further 

 from the anterior ocellus than from the base of the clypeus ; the second 

 joint of the flagellum nearly half as long again as the third. Eyes diverg- 

 ing strongly towards the clypeus ; the posterior ocelli more than twice as- 

 far from the eyes as from each other. Cheeks as broad as the greatest 

 width of the eyes. Mesopleurse swollen, with a minute spine. Jirst abdo- 

 minal segment nearly as long as broad, second ventral segment without a 

 raised area at the base ; pygidial area about half as broad at the apex as- 

 at the base, gradually narrowed, a little more than twice as long as the 

 greatest breadth. Head closely but not coarsely punctured, the front 

 between the ocelli and the base of the antennae longitudinally striate- 

 rugulose ; thorax very sparsely punctured, the anterior half of the mesono- 

 tum longitudinally striated, mesopleurse and median segment more deeply 

 and closely punctured ; the enclosed area at the base of the median segment 

 obliquely striated at the base, transversely at the apex, the median groove 

 indistinct. Petiole sparsely punctured ; the remainder of the abdomen 

 smooth ; the segments not strongly constricted. 



The yellow bands on the vertex are longitudinal, not oblique,, 

 the spot behind the eye is large and curved and the band on the 

 scutellum is interrupted. Wings hyaline, broadly fuscous on the costal 

 margin. 



Habitat. — Kuching, N. W. Borneo {Shelford). September. Type in 

 Oxford University Museum. 



This is nearer to ferox than shelfordi, but may be distinguished by the 

 shape of the lamina of the clypeus, which is broadly rounded at the apex 

 ]3 



