156 PHYTOPHAGA. 



elytra strongly rugose punctate at the sides, deeply transversely depressed below the base, the interstices 

 strongly longitudinally costate at the sides. 



Eab. Guatemala, Capetillo, Purula {Champion) ; Costa Eica (van Patten). 



This species cannot possibly be considered a variety only of C. cincta; all the 

 numerous specimens before me show the same characters. The species is separated 

 from C. cincta, first by the strong punctuation of the elytra and their rugose inter- 

 stices, secondly by the shape of the fulvous spot, which never extends to the lateral 

 margins of the elytra, but ends on each side in a sharp point, and lastly by the shape 

 of the prosternum, which has its base concave emarginate, but not distinctly bilobed as 

 in C. cincta. 



3. Chalcophana depressa. 



Oblong, subdepressed above; fulvous; elytra closely and strongly punctate-striate, the sides with two or 

 three highly raised costae, metallic green, a broad central transverse band, the lateral margins and apex 

 fulvous. 



Length 3-31 lines. 



Head rather strongly and closely punctured, the vertex swollen ; clypeus triangular, separated in front by a 

 distinct depression, which at each side is limited by an elevated smooth space ; apex of the jaws piceous ; 

 antenna? two thirds the length of the body, entirely fulvous, shining, the last five joints thickened and 

 opaque in consequence of fine pubescence ; thorax rather convex, all the angles produced outwards and 

 acute, surface distinctly and not more strongly punctured than the head ; scutellum fulvous, its apex 

 rounded ; elytra distinctly flattened at the centre of the disk, the sides and the apex much deflexed ; the 

 humeral callus produced into a short but highly raised oblique ridge, behind which two equally raised 

 costse run in a rather curved line towards the apex, without, however, extending to the latter, rest of the 

 surface deeply and rather irregularly punctate-striate, the interstices near the apex and in front of the 

 above-mentioned costae also more or less distinctly raised. 



Yar. a. Above violaceous blue, last six joints of the antennae piceous ; the central elytral band much narrower. 



Yar. b. Antennae black, the three basal joints fulvous only ; the apex of the tibiae and the tarsi black ; the 

 elytral band very narrow at the sides and abbreviated. 



Hob. Mexico, Cordova, Oaxaca, Guanajuato (Edge, Salle). 



Of this species only specimens of the female sex are before me; but I do not doubt 

 that they represent a distinct form, of which the principal distinguishing characters are 

 the sharp and highly raised lateral costae, and the close and deep punctuation of the 

 elytra, which does not run in double lines, as well as the flattened upper surface of the 

 latter. The specimens from Cordova have the antennae entirely fulvous ; but in one 

 from Oaxaca and another from Guanajuato the last joints are black, and the band of the 

 elytra is much narrowed, this latter being particularly broad in the Cordova specimens. 

 The above characters are sufficient to distinguish the present insect from C. cincta. 



4. Chalcophana ancora. 



Chalcophana ancora, Harold, Coleopt. Hefte, xii. 1874, p. 78 l ; Sturm, Cat. 1843, p. 294 \ 



Eab. Mexico 12 , Cuernavaca (Salle); Guatemala, near the city, Zapote (Champion); 

 Costa Eica (van Patten). 



