CHBYSOGONA. 431 



Key to the Genera *. 



a. First discoidal cell in fore wing absent or 



incomplete . CHRYSOGONA, p. 431. 



f b. First discoidal cell in fore wing present, 



complete. 



'. Of large size, face elongate ; sides of head 

 below eyes subparallel and prolonged into 

 somewhat of a oeak shape ; apical margin 



of abdomen dentate STILBUM, p. 432. 



b'. Size variable, sides of head not prolonged 

 into a beak shape ; apical margin of abdo- 

 men entire or dentate or sen-ate. 

 a 2 . Apical margin of abdomen with not 



more than 6 teeth CHRYSIS, p. 434. 



b~. Apical margin of abdomen serrate, with 



numerous uneven teeth EUCHRCEUS, p. 404. 



Genus CHRYSOGONA. 



Chrysogona, Fiirster, Verh. nat. Ver.preuss.Rheinl. x(1853), p. 327 

 Chrysis, pt., Dahlb. Hym. Eur. ii (1854), p. 187, pi. x, fig. 105. 



Type, C. yracillima, Forst., from Europe. 



lianye. Both hemispheres. 



$ <3 . Very close to and resembling the genus Clirysis, Linn. 

 Differs chiefly in the neuration of the fore wing, in which the 

 discoidal cells are entirely wanting, or occasionally the 1st discoidal 

 is outlined faintly with brown lines ; the costal and medial cells 

 only are complete, the former very narrow; the radial cell is 

 always open at the apex, sometimes very incomplete ; the 1st and 

 2nd submedial cells incomplete, the rest of the cells entirely 

 obsolete ; the legs and tarsi are normally constructed, the claws 

 simple. Abdomen very nearly as in Chrysis ; the transverse 

 anteapical series of foveae on the 3rd segment very distinct in the 

 Indian species. Only one species has so far been recorded from 

 within our limits. 



512. Chrysogona pumila, Kluy, Si/mb. Physic, pt. 6 (1845) Ins., 



pi. 45, tig. 13 ; Mocs. Man. Chrys. 1889, p. 183, pi. i, tig. 38. 

 Chrysis assimilis, Daltlb. (nee Spinola), Hym. Enr. ii (1854), p. 201. 

 Chrysogona assimilis, du Buyss. Jour. Bomb. N. H. Soc. x (1890), 

 p. 467, pi. ii, ng. 8. 



$ . Greenish blue, the discs of the 2nd and 3rd abdominal 

 segments darker blue, on the 2nd almost black ; antennae dusky 



* Founded on a table of geuera by du Uuysson in the Jour. Bomb. N. H 

 Soc. x (1896), p. 467. 



