140 PHYTOPHAGA. 



minute tooth preceding the more distinct one at the thoracic lateral margin, and in the 

 colour of the antenna?, which have the seventh and last three joints usually (but not 

 always) piceous. The species is smaller than C. prasina, and may be distinguished 

 from the latter by the transversely wrinkled interstices, which are especially plainly 

 visible near the lateral margins, and by the want of the longitudinal costse ; the elytra 

 in most specimens have a cupreous tint ; and the suture is generally entirely of that 

 colour. The thorax is more closely and finely punctured than in C. prasina ; and the 

 interstices are scarcely raised. The male insect is of a more parallel and narrower 

 shape than the female. The colour of the antennae is variable ; they are either entirely 

 flavous, or have the apical joints more or less of a piceous tint, while in many 

 specimens the seventh and last three joints only are of that colour. 



10. Colaspis mexicana. 



Oblong, convex, narrowed behind, metallic green; antennae and legs flavous; thorax obsoletely angulate, 

 closely punctured ; elytra very closely and strongly punctured, the interstices subreticulate. 



Length 3 lines. 



Head rather finely and very closely punctate, the punctures of a rather elongate shape ; middle of the head 

 impressed with a narrow longitudinal groove ; clypeus closely punctured, limited in front of the eyes by 

 two highly raised, smooth, metallic green spaces; labrum fulvous; antennae half the length of the 

 body, entirely flavous ; thorax not more than twice as broad as long, its sides very obsoletely angulate 

 behind the middle, the anterior angles slightly thickened but scarcely produced, surface very closely 

 punctured, the punctures deeper than those of the head, the interstices here and there raised into small 

 smooth spaces ; scutellum small, impunctate ; elytra convex, distinctly narrowed behind, the apex rather 

 pointed, surface closely covered with punctures of a larger size than those of the thorax and arranged 

 near the sutural margin into rather regular lines, the interstices reticulate, more especially near the sides ; 

 two narrow but distinct costae run parallel and close with the lateral margin, from below the shoulder to 

 the apex ; underside metallic green, finely punctured. 



Hdb. Mexico, Cordova (Edge). 



The general shape of the present species is narrow and elongate, its colour scarcely 

 shining, but subopake dull green. The very close sculpturing of its elytra, which is 

 not interrupted by costse except near the extreme lateral margin, in connexion with 

 the metallic green underside will distinguish it from its allies, of which C. viridissima, 

 Lefev., seems to be the nearest form. That species, however, is much larger ; and its 

 thorax much more deeply punctured, and strongly dentate at its sides, 



11. Colaspis submetallica. (Tab. VII. fig. 7.) 



Oblong, moderately convex, fulvous, above with a metallic green tint, seventh joint of the antennae piceous ; 

 thorax long, sides bidentate ; elytra moderately strongly geminate-punctate-striate. 



Length 3 lines. 



Head swollen at the vertex and finely punctured ; clypeus more strongly punctured ; labrum fulvous ; jaws 

 black ; antennae light fulvous, the seventh joint piceous ; thorax scarcely twice as broad as long, much 

 widened at the middle, sides behind the latter with two teeth, surface very closely but finely punctured, 

 fulvous, with a strong metallic green gloss ; elytra of the same colour as, and scarcely more strongly 

 punctured than the thorax, the punctuation very close, and arranged in double rows anteriorly, the 



