‘180 PHYTOPHAGA.—SUPPLEMENT. 
L. opacicolle differs from the similarly-coloured allied forms in the shape of the 
prosternum, and in the opaque and impunctate thorax, dull leaden colour of the elytra, 
bright red, but not very shining, head and sides of the thorax, and posteriorly broad 
shape. One specimen. 
36 (c). Lamprosoma angustatum. 
Ovate, strongly narrowed posteriorly, black, above reddish-cupreous; head and thorax finely punctured ; elytra 
finely punctate-striate ; prosternum broader than long. 
Length 2} lines. 
Head extremely finely granulate, finely and rather closely punctured, the anterior margin of the epistome 
nearly straight, the parts of the mouth black; antenne black, the basal joints fulvous below; thorax 
strongly transverse, very finely and remotely punctured at the sides, more closely and strongly so on the 
disc ; elytra much narrowed posteriorly, finely punctate-striate, the interstices somewhat aciculate ; under- 
side and legs black ; prosternum distinctly broader than long, with a few punctures. 
Hab. Paxama, Caldera in Chiriqui (Champion). 
I am unable to refer this insect, of which only a single specimen was obtained, to 
any described species, owing to its posteriorly narrowed shape and broad prosternum, 
the latter in most of the similarly-coloured congeners being longer than broad. In the 
example before me there is an obscure dark band at the base of the thorax which i is 
probably accidental. 
86 (p). Lamprosoma constrictum. 
Ovate, strongly convex, much narrowed posteriorly, bright metallic green ; antenne and abdomen black ; head 
and thorax strongly punctured; elytra deeply punctate-striate, the interstices obsoletely aciculate; pro- 
sternum excavate. 
Length 2 lines. 
Of very convex and posteriorly narrowed shape, bright metallic green ; head minutely granulate and strongly 
but not very closely punctured, the epistome strongly deflexed, deeply emarginate anteriorly, the labrum 
and mandibles black; antenne black, the first joint below and the second one entirely fulvous ; thorax 
short, very strongly transverse, the median lobe rather rounded and with a depression near its apex, the 
surface punctured like that of the head; elytra only half as wide at the apex as at the base, strongly 
punctate-striate, the interstices irregularly and ubsoletely aciculate, the lateral lobe moderately produced 
and not very pointed ; underside black, the sides of the metasternum and the femora metallic greenish ; 
prosternum quadrate, excavate throughout its entire length, and punctured. 
Hab. Guatemata, Panzos in Vera Paz (Conradt). 
The strongly punctured head and thorax and the excavate prosternum, in connection 
with the posteriorly narrowed shape, separate this species from any of its 's similarly- 
coloured allies. One example. 
36 (c). Lamprosoma unicolor. 
Broadly ovate, metallic violaceous-blue; head and thorax minutely and closely punctured; elytra finely 
punctate-striate, the interstices obscurely aciculate ; prosternum subquadrate, deeply excavated. 
Length 2 lines. 
Head very finely and closely punctured ; the epistome separated from the face by an obscure transverse groove, 
a little more strongly punctured than the rest of the head, its anterior margin moderately concave- 
