MALACODERMATA. 273 
I have a species of Aspidosoma from Brazil which is closely allied to, if not identical 
with, this, and which bears a MS. name “ viridis, Dohrn.” I believe it has never been 
described ; and as our insect may be a distinct species, I propose a name derived 
from its curious and extreme resemblance to a Cassida of the genus Physonota. I 
have only seen three specimens—the two recorded here and my own from Brazil; the 
diagnosis, with the aid of our figure, will enable collectors to recognize it. The brown 
tint of the luminous segments is probably due to the drying of the fluids. 
PHOTURIS (p. 56). 
Section I. 
1 (a). Photuris hectica ? 
Lampyris hectica, Fabr. Syst. El. ii. p. 102 ?? 
Supra ochracea, subopaca ; antennis, epistomate, palporum articulo ultimo, abdominis segmentis quatuor basa- 
libus, tibiis tarsisque nigris ; occipite, pectore femoribusque externe parum infuscatis ; antennis filiformibus, 
haud serratis. Long. 13 millim. 9. 
Femina. Unguiculis simplicibus ; abdominis segmentis quinto et sexto flavis medio lucidis, apicali obconico, 
apice leviter exciso, flavescente, medio fusco. 
Hab. Panama, Bugaba (Champion). 
The determination of this insect is necessarily conjectural, because there is only one 
female specimen. It differs from the species described here as P. livida in having a 
proportionally smaller thorax, which is not shining, and which has not the hind angles 
acute and produced backwards (asin the P. collaris section); and the antennz are more 
filiform, with longer joints. I observe two minute blackish dots on the thorax, which 
may be accidental, as they are not placed symmetrically, one on one side of the centre | 
and one in the middle near the base. 
1 (s). Photuris livida. 
Supra ochracea ; prothorace nitido, disco rubricante, indistincte nigro vittato; capite, antennis, palpis, pedibus 
et corpore subtus nigro-fuscis, testaceo variegatis. Long. 17 millim. 9°. 
Femina, Segmentis quinto et sexto ventralibus pallide testaceis roseo tinctis, unguiculis simplicibus. 
Hab. Panama, Volcan de Chiriqui (Champion). 
There is only one female specimen of this species in Mr. Champion’s Chiriqui collections, 
and it is not possible to say for certain, in the absence of the male, to which section it 
belongs; I think, however, the male will prove to have split claws. The general form is 
that of P. collaris. The colour of the thorax and elytra is ochraceous yellow, and not 
unlike my specimens of P. hectica, Fabr. The elytra are flatter, and like those of the 
P. collaris section. The antennz are not very long ; the middle joints about twice as long 
as broad, very faintly serrate, black, excepting the underside of the basal joint and the 
extreme apex of two or three succeeding joints. The head is excavated between 
the eyes. 
BIOL. CENTR.-AMER., Coleopt., Vol. III. Pt. 2, March 1885. 2N 
