424 CHRysiDiD.t. 



Genus HEDYCHRIDIUM. 



Hedvchrum, pt., Latr. Hist. Nat. Cruxt. Ins. iii (1802), p. 317. 

 Holopyg-a, pt., l)a/i/b. Hiim. Eur. ii (1854), p. 47. 

 Hedvchridiiim. Ab. dc Fcrrin, Ajiv. Soc. Linn. Ly(m, xxvi (1879), 

 p. '35. 



Type, //. anale, Dahlb., from Europe. 



Range. Both hemispheres. 



$ (S . Iledychridium is closely allied both to Holopyga and 

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

 of the former. From HoJopycja it can be distinguislied 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 Hedyclirmu 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 c\a.\\ and at riglit angles to its 

 underside. 



Key to the Sjjecies. 



a. Extreme apical margin of abdomen channeled 



and very uarrowiy curled upwards H. 7vrov.ghtom, p. 425. 



h. Apical margin of abdomen not channeled nor 

 curled upwards. 

 a' . Pronotum anteriorly with a short trans- 

 verse deep impression //. j^ervcvKum, p. 424. 



b' . Pronotum anteriorly without such im- 

 pression. 

 a^. Sides of 1st abdominal segment more 



coarsely punctured than disc H. (?) rw/osutn, p. 425. 



b"^. First abdominal segment uniformly 

 punctured. 

 a^. Sides of pronotum parallel ; abdomen 

 dark blue, 2nd segment with purple 



reflections H. sekctum, p. 426. 



b^. Sides of pronotuih very distinctly con- 

 vergent anteriorly : abdomen on the 

 discs of the segments fiery cupreous 

 golden TI. mimtfum, p. 427. 



504. Hedychridium perversum. Nin-se, Entomolo(/ist , xxxv (1902), 

 p. 300, 2 c?. (PI. I, fig. b.) 



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

 abdomen with a coppery eft'ulgeuce from the apical half of the 

 basal segment Aown to the apex ; antennse : the sca])e 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 \\'hitish, abundant. 



