424 CHEYSIDID-t. 



Genus HEDYCHRIDIUM. 



Hedyckrum, pt, Latr. Hist. Nat. Crust. Ins. Hi (1802), p. 317. 

 Holopvga, pt., Daklb. Jtym. Em: ii (1854), p. 47. _ 



Hedvchridium. Ab. de Perrin, Ann. Soc. Lmn. Lyon, xxvi (18/9), 

 p/35. 



Type, H. anale, Dahlb., from Europe. 



Range. Both hemispheres. 



$ cJ. ffedychridiwn is closely allied both to Holopyya and 

 Hedychrum. It is considered by^Mocsary to form only a subgenus 

 of the former. From Holopyya it can be distinguished by the 

 basal nervure of the fore wing being straighter, only slightly 

 curved, never bent inwards at an angle, and by the unidentate 

 claws to the tarsi. From Hedychrum it is separated by the 

 rounded, entire, not laterally angular nor subdentate apical margin 

 of the abdomen, and by the tooth on the claws of the tarsi being 

 farther away from the apex of the claw and at right angles to its 

 underside. 



Key to the Species. 



a. Extreme apical margin of abdomen channeled 



and very narrowly curled upwards H. icrouglitoni, p. 425. 



6. Apical margin of abdomen not channeled nor 



curled upwards. 



a'. Pronotum anteriorly with a short trans- 

 verse deep impression H. pei-vertum, p. 424. 



b'. Pronotum anteriorly without such im- 

 pression. 

 a 2 . Sides of 1st abdominal segment more 



coarsely punctured than disc H. (?) rut/osum, p. 425. 



b 3 . First abdominal segment uniformly 



punctured. 



a 3 . Sides of pronotum parallel ; abdomen 

 dark blue, 2nd segment with purple 



reflections H. selectum, p. 426. 



6 3 . Sides of pronotum very distinctly con- 

 vergent anteriorly ; abdomen o"n the 

 discs of the segments fiery cupreous 

 golden * H. mimtfum, p. 427. 



504. Hedychridium perversum, Nurse, Entomologist, xxxv (1902), 

 p. 306, $cj. (PI. I, fig. 8.) 



$ . Metallic green with in certain lights a bluish shine, 

 abdomen with a coppery effulgence from the apical half of the 

 basal segment down to the apex ; antennse : the scape green above, 

 the flagellum brown, the tarsi of the legs light yellowish brown; 

 head, thorax and abdomen punctured, the punctures on the head 

 and thorax tolerably close but not dense and somewhat shallow, 

 larger and farther apart on the scutellum and postscutellum ; 

 on the abdomen the punctures are fine and regular ; facial hollow- 

 finely transversely striate, covered densely with rather long white 

 pubescence, that hides the sculpture ; pilosity whitish, abundant. 



