CHRYSODINA. 



109 



with hairs. Three specimens of the present insect, of which one is of a more greyish 

 tint, are from M. Salle's collection. 



10. Chrysodina purpureicollis. 



Oblong-ovate, obscure greenish blue below ; antennae and tarsi piceous, basal joints of the former fulvous ; 

 thorax purplish, basal margin metallic green, surface very closely and finely punctured ; elytra cupreous, 

 deeply and closely punctate-striate. 



Length 1| line. 



Head purplish or metallic green, the vertex finely, lower part of face more strongly punctured ; labrum fulvous ; 

 four first joints of the antennae fulvous, the rest black or piceous ; thorax purplish, convex, finely margined 

 with metallic blue, very finely and closely punctured ; scutellum purplish ; elytra cupreous, slightly 

 depressed below the shoulders, surface very closely and rather strongly punctate-striate ; inflexed limb 

 purplish ; legs seneous or greenish, base of the femora more or less fulvous. 



Hab. Mexico, Oaxaca, La Parada, Yolos (JBoucard, coll. Salle). 



The fine and close punctuation of the thorax, in connexion with the closely approached 

 and deeply punctured elytral striae, distinguishes this species well from others, another 

 characteristic peculiarity being the colour of the thorax. 



11. Chrysodina cupriceps. (Tab. VI. figg. 3, 4.) 



Chrysodina cupriceps, Lefevre, Ann. Soc. Ent. France, serie 5, 1877, p. 118 1 . 

 Chalcoplacis instabilis, Jac. P. Z. S. 1879, p. 777 . 



Hab. Guatemala, Zapote 2 ( Champion). — Hondukas 1 (Salle). 



In comparing Lefevre's type with my own, I find that the two insects are identical, 

 and that, without doubt, the species has been rightly placed by M. Lefevre in the present 

 genus, the shape of the antennae having unfortunately been overlooked by me in the 

 single specimen at that time before me. Numerous others have since then been received 

 from Guatemala, but only one from Zapote. The two specimens figured are Lefevre's 

 type and a more narrow one from Zapote. The species varies from dark blue to 

 bronze-colour, but may be at once recognized by the cupreous colour of the head, 

 although a single specimen has the latter nearly entirely black, this being, however, the 

 only instance among nearly thirty specimens. 



12. Chrysodina marginicollis. 



Oblong-ovate, moderately convex, metallic green below ; antennae black, five or sis basal joints obscure fulvous ; 



above asneous or cupreous ; head and the lateral and basal margins of the thorax metallic green. 

 Var. Entirely violaceous blue. 



Upn^part of thThead impressed with deep and oblong punctures ; clypeus wedge-shaped, separated from the 

 face by a distinct transverse depression, subrugose-punctate, its anterior margin deeply concave; labrum 

 obscure fulvous, with a metallic green tint; antenme half the length of the body, the first six joints 

 obscure fulvous shining, the rest thickened, transverse, opaque ; thorax transverse, closely but finely 

 punctured the basal margin accompanied by a row of stronger punctures, surface cupreous, the lateral 

 margin narrowly and the basal one broadly metallic green ; scutellum cupreous ; elytra of the same colour, 



