MONOGMAPII OF THi: WASPS OF BHITISH INDIA. 81 Ji 



Very near rubida Jur., but is much less coarsely puuctured. It may 

 be distinguislied from pulchru Cam. by the less disthict raised area oid 

 the second ventral segment, and by the truncate apex of the clypeuS' 

 of the male. Bingham's record of pulchra from X. W. Provinces may 

 perhaps apply to this species. The typical form of tristu is without the- 

 ferruginous colour on the two basal abdominal segments, but the variety I 

 have described here is the usual form. It seems to be one of the com- 

 monest Indian species, and has been confused in Rothney's collection, 

 with C. fulchra, which has the incision of the clypeus more angular^ 

 and is a somewhat larger species. 



Cerceris melavnu sp. n. 



5 . Nigra ; clypeo fascia, scapo macula, pronoto macula utrinque, seg- 

 mento abdominali secundo macula parva basali, tertio fascia apicali pallide 

 fiavis ; segmento primo rufo ; pedibus flavovariegatis ; clypeo lato, apice- 

 lamina libera truncata, segmento mediano area basali rugose striata, seg- 

 mento ventrali secundo area basali elevata. 



Long, 8 mm. 



Clypeus slightly porrect. sparselj^ piuictured, nearly twice as broad at 

 the apex as long, the lamina free at the apex and broadly truncate. Inner 

 margins of the eyes parallel, the breadth of the cheeks equal to' 

 rather more than half of the greatest breadth of the eyes. Antennae 

 inserted more than half as far again from the anterior ocellus as from the 

 base of the clypeus, the second and third Joints of the flagellum of 

 about equal length, the interantennal carina short, conical between the 

 antennte and continued much lowered to the base of the clypeus. Ocelli 

 in a very broad triangle, the posterior pair less than half as far again from 

 the eyes as from each other. The whole insect closely and rather deeply 

 punctured ; the triangular area at the base of the median segment coarsely 

 obliquely rugose striate. Pronotum short, not depressed in the middle ; 

 mesopleurjB without spines. First abdominal segment broader in the 

 middle than long, constricted at the apex ; second ventral segment with a 

 raised area at the base. Fifth ventral segment normal : pygidial area 

 pyriform, twice as long as the greatest breadth, much narrowed from the- 

 middle posteriorly and very narrowly truncate at the apex. First 

 recurrent nervure received at one-third from the base of the second cubital 

 cell. 



Black ; a triangular spot on the inner margin of the eyes, a transverse 

 band on the middle of the clypeus, the scape beneath, a small spot on 

 each side of the pronotum, a spot on the tegulse, a small spot at the 

 base of the second dorsal segment of the abdomen, a narrow band at the 

 apex of the third, a small spot at the apex of the fifth, and a large spot 

 on each side of the third ventral segment pale yelloAv ; the legs black- 



