256 SUPPLEMENT. 
fuscate deepening of colour of the apical half of the elytra, which varies in many species, 
and may be sometimes confined to one sex. At all events all the specimens I have 
examined with dark elytra are male, while the three with wholly ochraceous elytra are 
female. This species is rather wide, with the thorax of the usual size, with its disc 
smooth, without channel, faintly carinate, and sometimes with small tubercular points ; 
the margin is flattish, not much reflexed, the colour of the disc rich brick-red, in the 
female not differing so much from the margin in brightness. The coxe, trochanters, and 
femora are yellow, the tibia and tarsi are blackish fuscous, as well as the knees in the 
male. In colour this Lucidota resembles ZL. discolor, L. rufa, Ol., and several other 
species known to me with the elytra yellow, with black apices. The antenne with white 
apical joints will distinguish it from any of them. It will come near to L. apicalis. 
19. Lucidota vitricollis. 
Oblongo-subovata nigra; prothorace sordide albida, antice vitrea macula discoidali subquadrata miniata, ad basin 
parum infuscata; antennis breviusculis, simpliciter compressis; segmento sexto ventrali macula parva alba. 
Long. 10 millim. ¢? 
Hab. Guatemata, Purula (Champion). 
The species for which this specific name is proposed differs very much in some 
aspects from others of the genus, and is, in fact, very nearly allied to an insect from 
Japan, which I have recently described under the name Lucidota fumosa. ‘These 
species have the antenne almost simple; the thorax narrows from the base, but is either 
evenly round in front, or the front is sinuously produced, and has the front portion 
with diaphanous glassy areolets. The examplesof Z. vitricollis, five in number, appear 
to be males, and the structure of the apex of the abdomen is a little similar to that of 
the species of Hyas with simple antenna, viz. the seventh ventral plate and the pygi- 
dium leave an opening’ between them, the eighth or genital segment being concealed 
within. ‘The only luminous part is a single spot in the centre of the sixth segment, 
which is conspicuously white, with sometimes a very small indistinct spot on the 
preceding segment, but no doubt the light affects other parts of these plates, which are 
often brownish in dried specimens. 
20. Lucidota chiriquiana. 
Oblongo-subovata, nigro-fusea, supra ochracea; prothorace subtriangulari, lateribus reflexis, disco macula qua- 
drata parum miniata, antice leviter carinata; capite, antennis, tibiis, tarsis abdomineque fuscis. Long, 
9-10 millim. <6. 
Mas. Segmentis ventralibus quinto et septimo utrinque albido-maculato. 
Femina? Segmentibus ventralibus tribus apicalibus cum pygidio totis albis. 
Hab. Panama, Volcan de Chiriqui, Bugaba (Champion). 
This species has avery puzzling aspect. At first sight it is very like the yellow form 
of Hyas semifusca met with on the Volcan de Chiriqui, but is narrower; nor have I 
observed the light-giving spots to be placed in a similar position in any of our species 
