70 PHYTOPHAGA.—SUPPLEMENT. 
Of rather depressed, posteriorly narrowed shape; the head impunctate, with the exception of a row of deep 
punctures near the inner margin of the eyes, the latter distinctly notched, the surface obscure greenish, 
variegated with purplish ; the anterior margin of the clypeus deeply concave-emarginate ; labrum fulvous ; 
antenne bluish-black, the lower three joints fulvous, the first stained with metallic green above; thorax 
twice as broad as long, the sides strongly deflexed anteriorly, narrowed in front, the posterior margin 
broadly rounded and produced at the middle, the surface with some very fine and distantly placed punc- 
tures and an oblique transverse depression on each side, where the punctures are much deeper than on 
the disc, the latter obscure greenish-seneous or purplish; scutellum very broad, subpentagonal, purplish 
or greenish, impunctate; elytra rather flattened, gradually narrowed behind, with a short depression 
below the shoulder, dark purplish, finely and rather closely punctured, the punctures arranged near the 
suture in irregular rows; underside covered with dense greyish pubescence ; legs obscure fulvous, with a 
slight metallic gloss. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This species is not difficult to distinguish, on account of its metallic colour, which 
changes from purple to greenish according to the way the specimens are viewed. 
2 (8). Megalostomis affinis. 
Subdepressed, narrowed behind, below black and densely pubescent, above dark greenish-wneous ; thorax finely 
and sparingly, the elytra more closely, distinctly, and semiregularly, punctured. 
Length 4 lines. 
Hab. Guatemata, Panima in Vera Paz 1500 feet (Champion). 
M. affinis, of which only a single specimen was obtained, is no doubt closely allied to 
M. metallica, but differs sufficiently from that species, as well as from WU. splendida, to 
be regarded as specifically distinct. In general shape MW. affinis agrees with the pre- 
ceding species ; but it is rather larger, the head is more strongly and closely punctured 
(especially near the eyes), the clypeus is bright metallic green, bordered with cupreous 
above, and the antenne do not extend further than the middle of the thorax and are 
black with the exception of the first three joints, these being eneous; the thorax is 
similar in shape to that of I. metallica, and has a narrow green and cupreous basal 
margin ; the scutellum is metallic green, its base cupreous; the elytra are of the same 
obscure dark greenish colour as the thorax, and have a very narrow bright metallic 
green sutural border, their punctuation being more strongly impressed than is the case 
in M. metallica, and the punctures are placed rather regularly in lines; and the legs 
are nearly black. M. affinis may principally be distinguished from WM. metallica by its 
larger and more robust shape, the dark green (not purplish) colour, and the more 
strongly punctured elytra. | 
Megalostomis notabilis (p. 30). 
To the locality Mexico, add :—Acapulco, Iguala in Guerrero (Hoge). 
M. notabilis is of more cylindrical and posteriorly less narrowed shape than MW. dimi- 
diata, which it otherwise much resembles. The fulvous portion of the elytra extends 
to about one third their length; and the pygidium is furnished with a distinct conical 
tubercle near the apex, this being absent in WM. dimidiata. 
