1875.] MR. A. BOUCARD ON THE GENUS PLUSIOTIS. 119 
PLUSIOTIS RESPLENDENS, sp. n. (Plate XXIII. fig. 5.) 
P. resplendens: oblonga, valde convera, supra aureo-metallica, 
capite punctato, oculorum margine interiore aureo-rubro, clypeo 
antice rotundato roseo-violaceo ; thorace subtiliter punctulato ; 
elytris aureis, nitidis, levibus; infra roseo-argentea, tarsis 
aureo viridibus, antennis fuscis. Length 1 inch. 
Head strongly punctured ; thorax nearly twice as long as it is 
broad, convex, the whole surface smooth ; elytra convex, lightly 
striated with a burnished reddish gold margin, broader in the middle 
and rounded at the base. All the upper surface with the pygidium 
is of the most magnificent burnished pale gold, which will at once 
distinguish the species from any other. The underside is brassy 
silvery, less shining, with purplish reflections. 
The only difference I can perceive between the male and the 
female is in the former being a little narrower and in the underside, 
which is more golden with greenish reflections. 
fab. Costa Rica. 
I have two specimens of this magnificent insect, which were col- 
lected near San José. 
PLusiotis AURORA, sp. n. (Plate XXIII. fig. 7.) 
P. aurora: supra roseo-metallica, oblongo-ovata, capite punctato, 
thorace subtiliter punctulato, margine rubro; elytris tenuiter 
punctatis, punctis in striis regulariter dispositis, margine rubro; 
infraigneo-rosea, tarsis rubro-metallicis, antennis fuscis. Length 
1 inch 2 lines. 
The bright rose colouring with red margin will at once distinguish 
this species from its congeners. 
The head is slightly punctured, rosaceous, with greenish reflections ; 
the thorax is of the most magnificent metallic ecoppery rose-colour, as 
well as the elytra and the pygidium, and slightly punctured all over. 
In the elytra the punctuation is disposed in regular striz ; they are 
oblong, a little broader in the middle and rounded at the base. The 
underside is of the same colour as the head, with the same reflection. 
Tarsi metallic red, with black claws. 
Hab. Veragua. 
I have only one specimen of this very handsome insect, which was 
sent to me two years ago by one of my correspondents. Three 
months ago I received from the same country what I consider to 
be the female. It is exactly similar in shape and size; but the 
colour is totally different, being a kind of pale silvery green, with 
rose reflections. 
However, I am in doubt about it, as I have just received from the 
same country another specimen equally similar but all green. Un- 
fortunately this insect is not in a condition to be described, having 
lost a great part of its original colour on the elytra and thorax. 
I shall wait until more specimens arrive to decide the question. 
Puusiotis Baresi, sp.n. (Plate XXIII. fig. 6.) 
P. batesii: oblonga, valde convexa, supra aureo-pallida splendida, 
