98 PHYTOPHAGA. 



23. Lamprosoma inornatum. 



Lamprosoma inornatum, Jacoby, P. Z. S. 1878, p. 984. 

 Hdb. Panama, Chiriqui. 



This species has the thorax but slightly depressed laterally, in which respect it 

 approaches L. laticolle, but differs from the latter in the black underside, and from 

 that and all other allied species by the greatly deflexed epistome, which is bordered or 

 limited in front by a very distinct ridge, the colour of which is metallic green. In 

 general shape the present insect is much more regularly convex than L. laticolle. 



24. Lamprosoma violaceum. 



Lamprosoma violaceum, Jacoby, P. Z. S. 1880, p. 167. 



Hdb. British Honduras, river Sarstoon {Blancaneaux). 



The present species was founded by me Upon a single specimen from the above 

 locality ; the distinguishing characters, taken conjointly, are the perfectly impunctate 

 head, very minutely punctate thorax, with the sides of the latter entirely straight, and 

 the rounded, not acute, lateral lobe of the elytra. 



25. Lamprosoma prosternale. 



Broadly ovate, moderately convex, black; above dark metallic blue or greenish; head and thorax smooth j 

 elytra remotely punctate-striate ; prosternum depressed, subcorneal. 



Length 3 lines. 



Head rather convex, metallic green, impunctate, anterior margin of the epistome straight; antennae black, 

 second joint fulvous ; thorax rather long, not more than twice as broad as long, the basal lobe acute, 

 surface impunctate ; elytra regularly but moderately convex, the apex broadly rounded, each elytron with 

 ten rows of distantly placed but very distinct punctures, which are less strongly impressed towards the 

 apex ; underside and legs black ; prosternum raised anteriorly in the shape of a narrow cone or protuberance* 

 the sides deflexed, and the base slightly concave, its surface smooth. 



Hdb. Nicaragua, Chontales (Janson). 



This is the only instance known to me of a species belonging to this genus possessing 

 a prosternum shaped as described, by which it may be known from all others. A single 

 specimen is contained in my collection. 



26. Lamprosoma lacordairii. 



Ovate, convex anteriorly, narrowed behind, violaceous blue; head and thorax finely punctured ; elytra finely 



punctate-striate ; prosternum broader than long, deeply excavated anteriorly. 

 Length 3 lines. 



Head convex, very minutely punctured ; epistome scarcely deflexed, its anterior margin concave, thorax punc- 

 tured like the head, a little more distinctly at the base, basal lobe not very acute, subrotundate j elytra 

 convex to the anterior first third, thence to the apex regularly rounded, very distinctly punctate- 

 striate, the punctures somewhat irregular laterally, the lateral lobes very acute, pointed and angulate; 

 underside and legs dark violaceous ; prosternum very broad, deeply excavated anteriorly, and distinctly 

 punctured. 



Hdb. Mexico, Juquila (Boucard, coll. SalU). 



