P84 MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA. [Dec. 3, 



of thorax, apex of the elytra, outside of legs brilliant aureous or 

 copper-coloured. Head distinctly punctured. 



Length 2 lines. 



Head finely granulose, rather deeply but not closely punctured, 

 bright aureous ; first and second joint of the antennae of the latter 

 colour, the rest black. Thorax with its sides straight, anteriorly 

 much deflexed, the surface very convex and obtusely punctured, 

 much less distinctly visible than the punctures of the head, of an 

 almost black violaceous, with the anterior margin very narrowly and 

 the sides to a greater extent, but diminishing in width towards the 

 base, ornamented with bright metallic reddish-golden colour; the 

 inner margin of this colour at the sides of the thorax is deeply den- 

 tate. Elytra very convex near their base, distinctly narrowed 

 towards the apex ; each elytron with ten rows of rather coarse and 

 very regularly placed punctures, which scarcely diminish in size 

 towards the apex, the interstices smooth and impunctate ; the colour 

 is of the same dark violaceous as that of the thorax ; and at the apex 

 of each elytron is an elongate-oval patch of the same metallic colour 

 as the head and the thorax. Underside black, the outer sides of all 

 the legs metallic aureous ; tarsi black. 



Hab. Costa Rica. 



In my collection. 



This species is very closely allied to L. ignicaudatum, Lac, and 

 L. coruscum, Lac. ; but differs from the former by the deeply 

 punctured head, and the shape of the golden lateral band of the 

 thorax, while it is distinguished from the latter species by the shape 

 of the elytral spot, the colour of the thorax, and the colour of the legs. 



4. L^MPROSOMA INORNATUM, Sp. UOV. 



Ovate-globose, black, shining, above brilliant violaceous blue. 

 Head finely, thorax distinctly punctate ; elytra striate-punctate ; 

 prosternum smooth. 



Length 2^ lines. 



Head rather convex, with a small roundish fovea in the middle, 

 widely and finely punctured, violaceous blue, bordered anteriorly 

 with metallic green ; antennas black, the second joint fulvous. Thorax 

 transverse, the anterior angles much deflexed, the sides rounded ; 

 posterior margin sinuate on each side, with an obsolete short de- 

 pression on each side of the median lobe ; the surface much more 

 distinctly punctured than the head, and increasing in size towards 

 the base. Elytra very convex, their greatest convexity lying very 

 near the middle viewed sideways, they are gradually narrowed towards 

 the apex ; and each elytron has ten rows of rather deep punctures, 

 which diminish slightly towards the apex in size ; the colour is a 

 brilliant violaceous blue with a greenish tint. Underside and legs 

 black, shining, finely alutaceous and punctured; prosternum elongate, 

 quadrate, perfectly smooth, with a few rows of short whitish hairs. 



Hab. Chiriqui. 



In my collection. 



Although this species is nearly allied to L. testudineum, Lac, aa 



