EHrNcnniM:. 359 



634. Rhyncliiuni bengalense, Sauss. Mon. Guep. Sol. Siq>2)l. p. 176, 



pi. ix, tig. 8, cS ; Smith, Cat. v, p. 44. 



5 . Head and thorax finely and closely punctured, abdomen 

 smooth and satmy ; clypeiis strongly convex, broadly pyriform, 

 with two short parallel carinae on the anterior third, ending in 

 two teeth at the apex ; seutellum and pcstscutellum oblique, the 

 former with a longitudinally impressed medial smooth line, the 

 latter gibbous ; median segment concavo-truucate posteriorly, a 

 medial broad space, closely transversely striate, and divided by a 

 narrow vertical furrow. Jet-black ; the apical margins laterally of 

 the 2nd-5th abdominal segments orange, on the 2nd segment the 

 orange colour is continued along the sides of the doi'sal plate 

 forward ; \^ings dark fuscous with a violet effulgence. 



cf similar, but the clypeus not carinate anteriorly, the apex 

 emarginate ; the clypeus and front of the scape of the antennae 

 yellowish white ; the apical joint of the flagellum ferruginous. 



Var, The orange markings on the 4th and 5th abdominal 

 segments more or less obsolete. 



Hah. Barrackpore, Bengal; Allahabad, N.W.P., and probably 

 through Central India. $ . Length 15-17 ; exj). 34-36 mm. (S . 

 LengUi 12—14 ; exp. 32-33 mm. 



635, Ehynchium flavomarginatnm, Smith, Trans. Ent. Soc. 1852, 



p. 35, c? ; Sauss. Mon. Guep. Sol. Suppl. p. 177. 

 Odynerus nig-rifroiis, Smith, Cat. v, p. 62. 

 Rhynchium basimacula, Cum. Mem. Manck. L. Ph. Soc. xli (1897). 



2 . Head and thorax somewhat coarsely and very closely, 

 abdomen more finely and sparsely punctured, the punctures on 

 the 2nd-5th segments coarser posteriorly, form- 

 ing a distinct subapical band above ; clypeus 

 broadly pyriform, the apex with a medial ver- 

 tical short groove and ending in two prominent 

 teeth ; anteunal carina short but distinct ; post- 

 scutellum gibbous, projecting posteriorly, the 

 margin roughened ; median segment vertical, 

 concavo-truncate posteriori}^ ; abdomen with the 

 'f •. '■ J, basal segment not narrowed. Black ; a spot 



marginatum 9. '. between the antennae, a Inie on the front or the 

 scape, an interrupted line (sometimes absent) on 

 the pronotum, a spot on each side of the median segment poste- 

 riorly (absent in the type specimen), and a broadly interrupted 

 narrow subapical line on the posterior margins of the 1st and 2nd 

 abdominal segments above yellow or yellowish white ; the apical 

 joint of the anterior tarsi fulvous, the femora at apex more or less 

 ferruginous ; wings fusco-hyaline, beautifully iridescent in certain 

 lights. 



S similar, the greater part of the clypeus and a line on the 

 anterior tibiae above yellowish white. 



Hah. Sikhim ; Mussooree, N.A\''. Himalayas ; China. $ . Length 

 13-17; e.rp. 34-40 mm. J. Length 13-14; exp. 33-36 mm. 



