PSETTDOLYBAS— LYBAS. 75 



narrow very considerably to the front angles ; the anterior margin is excavated a little 

 more deeply than in L. carhmculus ; the basal margin is a little less deeply sinuate, 

 the middle lobe faintly truncate and not at all covering the scutellum, and on each side 

 of it are a very few punctures on the extreme base. Elytra convex, and, with the 

 exception of a fine sutural stria, unsculptured ; the latter is entire. Underside smooth 

 and shining. Legs rather long ; tibiae a very little curved, as in L. carbunculus. 



There are two specimens from Bugaba ; the one from David is smaller and of a 

 lighter colour, with the obsolete punctures indicated by fuscous dots in series, and may 

 possibly not be specifically identical, a point impossible to be determined from a few 

 specimens. 



2. Pseudolybas vernicatus. 



Oblongus, minus ovatus, depressiusculus, pernitidus, laete castaneus, glaber. Antennis nigris, articulis quatuor 

 primis rufis ; elytris interdum punctis obsoletis ; subtus fuscis. Long. 4|-5 millim. 



Hab. Panama, Bugaba, Vol can de Chiriqui (Champion). 



This species is very close to P. glaber and only differs from it as follows : — It is of a 

 less evenly ovate form ; the thorax appears more depressed at the base ; the elytra are 

 not so convex and have the humeral callus rather more evident; the antennae are 

 thinner, the club especially being more lax and not so broad ; and the whole insect is 

 lighter in colour, and the fuscous punctures beneath the glazed surface are very evident. 



LYBAS. 



Lybas, Lacordaire, Monogr. Erotyl. p. 228 (1842) (Dej. Cat., Chevr.). 



Lybas, after the species separated by Crotch as Mycolybas have been eliminated, is a 

 genus of small extent and contains less than twenty species ; it is confined to Central 

 and South America and extends as far south as the Amazons. The majority of the 

 species are blood-red in colour, and have a very polished surface ; some of the South- 

 American forms have black elytra, and some have the thorax variegated. They are, 

 however, not usually so much ornamented with pattern as the Mycotreti. Lybas is 

 separated from Mycotretus by the mentum being acutely lanceolate in the middle, and 

 by the smooth surface, the more convex and gibbous form, and the more compressed 

 prosternum. The production of the middle of the base of the thorax into a lobe which 

 covers part of the scutellum is distinct in the larger species ; but it must be confessed 

 that the assignment of many of the small species to this genus is a matter at present of 

 much uncertainty. 



l. Lybas granatus. (Tab. IV. fig. 15.) 



Lybas granatus, Lac. Monogr. Erotyl. p. 231 \ 



Hab. Mexico \ Oaxaca (SalU), Tabasco \ Yucatan K 



L*2 



