350 EUMENID^. 



segments, coarse and somewhat more dense on the apical margins 



of segments 2-5 above ; cljpeus strongly convex, pyriform, the 



apical third with a broad medial vertical 



groove, the extreme apex truncate or lightly 



incised ; the scutellum and postscutellum 



smooth and shining, the latter gibbous, oblique 



and narrow ; the median segment very short, 



depressed below the postscutellum, concavo- 



truncate posteriorly, the sides rovinded, not 



angularly produced back, face of the truncation 



lightly transversely striate. Brownish red ; a 



F" 10^—7?;^ '^P'^^ between the antennae, a vertical line on 



chfumbrunnetfm, the front, a large triangular spot on the meso- 



2. |. notum in front, a line along its apex, the 



median segment in the middle posteriorly, the 



basal half of the legs, the basal two-thirds of the 1st, and the basal 



half of the 2nd abdominal segment black ; w-ings ferrugineo- 



byaline, deeper and darker towards the base. 



d similar, the median segment more deeply concavo-truncate, 

 the sides produced posteriorly and armed with two stout spines, 

 the apical margins of abdominal segments 2-5 much more coarsely 

 punctured, the clypeus and scape in front from a light fulvous 

 red to a bright yellow. 



Varieties have the black markings more or less developed, or 

 even altogether wanting (var. rarnaticum). 



Hah. Throughout India, Burma, Tenasserim, and Ceylon, ex- 

 tending to Malacca, Sumatra, and Borneo to the South-east, and 

 to Afghanistan and Persia to the North-west. 5 . Length 17-20 ; 

 exp. 37-41 mm, d" • Length 12-15 ; exp. 26-28 mm. 



629. Rhynchium mellyi. 



Rygchium mellyi, Sauss. Mon. Guep. Sol. p. 116, $ , 

 Rhyuchium mellyi, Sauss. Moti. Guep. Sol. Suppl. p. 172, cJ ; 

 Smith, Cat. v, p. 45. 



2 . Head and thorax closely and strongly, abdomen more finely 

 and sparsely punctured, the punctures on the abdomen shallow ; 

 clypeus broadly pyriform, the apex with a short medial groove 

 and two teeth ; postscutellum prominent, projecting posteriorly, 

 with the margin roughened and irregular ; median segment vertical, 

 concavo-truncate posteriorly, the truncation with a medial vei'tical 

 groove impunctate but finely obliquely striate ; abdomen with the 

 basal segment not narrowed. Black ; a spot between the antennae 

 and a line on the scape in front yellow, the apex of the flagellum 

 beneath and the apical joints of all the tarsi fulvous red ; the 2nd 

 and following segments of the abdomen obscure orange-red, some- 

 times the apical margin of the 1st segment narrowly orange-red, 

 or the base of the 2nd segment black ; wings fuscous with a purple 

 effulgence. 



(5 similar ; the clypeus and the front half of the scape of the 



