MATLACODERMATA. 227 
Very nearly allied to L. sommeri, but amply distinguished by the red tibiz, coarser 
sculpture of the elytra, their brick-, or rather blood-red colour, and by its peculiarly 
shining, waxy look. 
Six specimens, all males. 
LYGISTOPTERUS (p. 7). 
5. Lygistopterus ceruleus. 
Nigro-ceruleus, nitidus; prothorace disco nigro lateribus rufis, elytris saturate cyaneis. Long. 16-17 millim. 
dQ. 
Mas. Tibiis leviter curvatis, segmento apicali utrinque lamina pubescente, prothoracis angulis posticis sub- 
acutis, elytris postice ampliatis. 
Hab. Guatemaa, Quiche Mountains (¢ ), Totonicapam (Champion, @ ). 
The elytra are entirely of a deep blue in this very distinct and beautiful species. 
The thorax differs in shape in the sexes; being wider in front, with more rounded sides, 
in the female; its margins are much thickened and raised, except at the base. The 
rostrum is very short in the female, longer in the male. The apical segments of the 
abdomen are not so elongated as in most Lycide, the one preceding the one here termed 
“apical” being raised in the middle, acutely emarginate, somewhat compressed, with 
acute lateral lobes. Only three specimens (one male and two females) have yet 
occurred. ‘These were captured in the pine-forests, at elevations of from 8000- 
10,500 feet. 
6. Lygistopterus letus. (Tab. XI. fig. 2, 3.) 
Nigro-ceruleus ; prothoracis disco nigro lateribus rufis, elytris lete aurantiaceis vel rufis, apicibus saturate 
eeruleis. Long. 12-15 millim. ¢ 9. 
Mas. Antennis longioribus, tibiis curvatis apicibus mucronatis. 
Hab. Panama, Volcan de Chiriqui 6000 to 7000 feet (Champion). 
Very distinct in the system of its coloration from any species yet described, the apex 
of the elytra and their suture at its base alone being black, with a very faint blue tint. 
The body beneath is blue-black; the head, antenne, palpi, and legs black. The 
rostrum is very short and stout, the head being simply produced a little in front. The 
thorax is not wider than the elytra at their base; it is subquadrate, rather longer than 
wide, black, with the sides broadly yellow; the disc is shining. The scutellum and 
base of the suture are black, the elytra have the raised lines scarcely distinct, and the 
whole surface is thickly clothed with close pubescence, hiding any sculpture. Two 
specimens are all that have occurred. These were found in the dense virgin forest and 
at high elevations. 
Two specimens from Northern Sonora, Mexico (Morrison), in bad condition, labelled 
“Calochromus, sp.,” probably belong to this species, but they are very much smaller than 
my type. 
2G 2 
