428 CHKYSIDIOJE. 



suppressed beneath the postscutellum, the posterior lateral angles 

 moderately produced and acute at apex. Wings : fore wing with 

 a complete medial and almost complete 1st submedial cell, the 

 radial and 2nd submedial cells very rudimentary, the 1st discoidal 

 cell outlined by faint, sometimes very faint, brown lines. Legs : 

 the femora and tibiae normal, the claws of the tarsi bifid at 

 apex. Abdomen pseudosessile, broad, very convex above, rounded 

 posteriorly, the extreme apical margin more or less chitinous, 

 laterally angular or subdentate ; the 3rd abdominal segment in all 

 the Indian species very distinctly subapically grooved. 



Key to the Species. 



a. Facial cavity above not sharply margined. 

 a'. Head not broader than front of pro- 



notum, sides of thorax distinctly an- 

 teriorly convergent; apical chitinous 

 margin of ahdomen medially slightly 



emarginr.te H. timidum, p. 428. 



b'. Head slightly broader than front of 

 pronotuin ; "sides of thorax parallel ; 

 apical margin of abdomen not emar- 

 ginate H.jlammulatum, p. 429. 



b. Facial cavity above sharply margined, 



carinate H. luynbre, p. 430. 



50!). Hedychrum timidum. Dakllom, Hym. Eur. ii (1854), p. 65 ; 

 Mosc. Mon. Chrys. 1889, p. 160. 



$ . Green, with a golden effulgence and bluish shades in certain 

 lights, antennae dark brown, the scape above green, the apex of 

 the tibiae and the tarsi yellowish brown ; head closely reticulate- 

 punctate ; thorax coarsely and more sparsely punctured, the 

 punctures on the scutellum and postscutellum larger and farther 

 apart than on the front of the thorax ; abdomen finely and closely 

 punctured, the punctures shallow and somewhat larger and more 

 open on the apex of the 2nd and on the 3rd segment ; facial 

 cavity transversely finely striate, the upper portion smooth, 

 polished, uupunctured, the sculpture not obscured by any pubes- 

 cence ; pilosity whitish, very short and somewhat sparse. Head 

 short, flat, from occiput to the front about half the length 

 of the pronotum, but quite as broad ; clypeus broad, trans- 

 verse anteriorly, raised a little in the middle ; facial cavity com- 

 paratively deep, rather narrow, with a shallow broad groove down 

 the middle, its upper margin abruptly rounded, not carinate ; 

 front and vertex broad, convex ; the occiput sharply transverse ; 

 antennae slender, the 1st and 3rd joints of the flagellum subequal, 

 the 2nd joint twice as long as the 1st. Thorax : the pronotuin 

 convex, very long and massive, longer than the mesonotum, the 

 sides convergent anteriorly and with a waved outline ; propleurse 

 excavate ; mesonotum short, convex, somewhat transversely 

 rectangular, scutellum convex, subtrapezoidal ; mesopleurre trian- 



