NTSSOy. 



269 



b. Abdomen, basal segments black with 

 lateral yellow spots. 

 a' . Winrrs hyaline ; with a yellow stripe on 



the prouotum ; leg's red N. enjfhroporJa, p. 269. 



b'. Winufs fusco-hyaline ; no yellow stripe 



on the pronotum ; legs black N. basalts, p. 2G9. 



493. NySSOn rugOSUS, Ca7n. Mem. Manch. L. Ph. Soc. (4) iii, 1890, 



p. 242, pi. ix, figs. 13 & 18a. 



5 . Head, thorax, and abdomen coarsely rugose punctate, clypeus 

 with the apex bidentate, a prominent wedge-shaped projection on 

 the frout above the base of the antennae ; median segment steeply 

 sloped and concavo-truucate posteriorly ; mesopleura) prominent, 

 puuctured but not earinate beneath near the sternum, liiack ; a 

 spot on the scape in front, the posterior margin of the pronotum, a 

 short transverse line at the base of the scutellura, the anterior and 

 intermediate coxae in frout, and elongated lateral spots on the 

 posterior margins of the basal four abdominal segments, yellow ; the 

 spots on the 3rd and 4th segments small ; the basal segment above, 

 the basal two segments beneath, and the legs variegated with red : 

 the face in front, the A^ertex and cheeks, and the sides of the thorax 

 with silky silvery pile inclining to golden in certain lights ; wiugs 

 fusco-hyaline. 



Hah. Barraokpore, Bengal. $. Length!; e.t'p. 13mm. Type 

 iu coll. Eothney. 



494. Nysson erythropoda, Cam. Mem. Manch. L. Ph. Soc. (4) iii, 



1890, p. 242, pi. ix, figs. 18 & 18 a. 



5 . Clypeus porrect, finely punctured, the apex truncate : the 

 front and vertex of the head, the scutellum, and postscutellum 

 very coarsely and strongly punctured, rugose; the middle of the 

 pronotum, the mesonotum, and the abdomen above less coarsely and 

 more widely punctured, the punctures on the abdomen fiiier and 

 shallower ; median segment coarsely roughly reticulate, the apex 

 coiicavo-truncate, its upper lateral angles tuberculate ; mesopleurse 

 bujgiug, prominent, coarsely punctured, the angle below keeled ; 

 the metapleurse smooth, the sides of the median segment coarsely 

 punctured. Black; the posterior margin of the pronotum, a spot 

 at the base of the scutellura, and lateral elongate spots on the basal 

 two abdominal segments yellow ; the mandibles, the teguUe of the 

 wings, and the legs red, the antennae rufo-fuscous ; the sides of the 

 thorax and the coxae and femora of the legs covered with glittering 

 silvery pile : wings hyaline and iridescent, nervures testaceous. 



Hab. Barrackpore, Bengal. $ . Length Qk ; e.vp. 12 mm. 

 (S unknown. Type in coll. Eothney. 



*495. Nysson basalis, Smith, Cat. iv, p. 355, J; Handl. Sitztmgsb. 

 Akad. Wiss. Wien, xcv, 1887, p. 401 ; Cam. Mem. Manch. L. Ph. 

 Soc. (4) iii, 1890, p. 241. 



d . " Ijength 4 lines (8*5 mm.). — Black, the face thinly covered 



