46 MALACODERMATA. 
22. Photinus albicauda. | 
Niger, opacus, elytris subfuscis; thorace roseo, limbo toto et vitta sat lata mediana nigro-fuscis, lateribus 
sinuatis, antice angustatis. Long. 10-13 millim. ¢. 
Mas pygidio apice sinuatim truncato, hoc cum segmento septimo et apicali ventralibus albis. 
Hab. Mexico, Cordova (Sallé). 
This is not very like any other with which I am acquainted. The sinuate sides and 
rather projecting front of the thorax, together with its colour and reflexed lateral 
margins, give it very much the appearance of a Pyrectomena. The centre of the 
thorax presents a deep but rough channel. The front and middle femora are pale, 
excepting at the knees. The antenne are nearly half as long as the body, and this, 
together with the channelled thorax and a little expanded elytra, sufficiently distinguish 
it from any Pyrectomena. 
Four males are all I have seen. 
23. Photinus latiusculus. 
Ovatus, fumeo-niger, prothorace albo, medio nigro-vittato, utrinque roseo obsolete canaliculato, elytris opacis 
subpubescentibus. Long. 74-8 millim. ¢ 2. 
Hab. Mexico, Cordova, Tuxtla (Sallé). 
The antenne are rather long, reaching to the middle of the abdomen, and are very 
thin; the mouth and palpi are pale, except at their tips, as are the base of the legs 
indistinctly. The abdomen is whitish at the apex, but not very distinctly, excepting 
the pygidium and last two ventral segments in the male, and last ventral and dorsal 
plate only in the female. The thorax is widish at the base, and rather strongly nar- 
rowed to the front. . 
This is a species evidently with very soft integuments; the elytra, though black, are 
semitransparent. It has the facies of a small Hyas, and somewhat resembles Aspido- 
soma pulchellum. 
24. Photinus perlucens. (Tab. III. fig. 11.) 
Photinus perlucens, Gorh. Trans. Ent. Soc. 1880, p. 297. 
Hab. GuareMaa, Calderas 1, Duefias, Capetillo (Champion). 3 @. 
A Calderas specimen is figured. 
When I drew up the description of this species I had only seen two males; among 
three or four more specimens since sent is a female, which only differs in having the 
apical ventral segment black. 
25. Photinus fumigatus. 
Photinus fumigatus, Gorh. loc. cit. p. 28. 
Hab. GuateMaa, Zapote (Champion). 
