BARiNiE 459 



convex, with a single series of strong asperulate punctures. The 

 scutellum is small and nude. The mandibles and tarsal claws are 

 exactly as in Centrinaspis, and the prosternum of the male is not 

 armed. 



Pachybaris Lee. 

 The very broadly oval form and nude surface of the body in this 

 genus, are very different from anything observable in the preceding 

 types of the Centrinini, though remindful somewhat of GlyptogercBus. 

 The claws are free, the mandibles crenate within, coming together 

 along their inner margin nearly as in Cenlriniis and forming a 

 pointed ogive when closed. The anterior coxae are separated widely, 

 the prosternum flat, impressed slightly at apex. Sexual characters 

 are very feeble. The type, named porosa by LeConte, inhabits 

 lower Florida, the following is a smaller and less broadly oval species: 



Pachybaris ludoviciana n. sp. — ^Broadly oval, moderately convex, 

 shining, black and glabrous throughout, the legs rufous, coarsely punc- 

 tured and with small sparse squamules; beak as in porosa but not quite 

 so thick, the antennae nearly similar; prothorax also as in porosa but with 

 the coarse sparse punctures becoming much denser toward the sides, 

 the median basal lobe less deeply emarginate for the scutellum; elytra 

 almost similar but a little narrower and longer, the grooves coarse and 

 deep; intervals nearly twice as wide as the grooves, with a single series 

 of very coarse punctures, each having a slender dark decumbent and 

 wholly inconspicuous squamule, the punctures a little smaller on the 

 intervals toward the suture, usually somewhat confused on the second; 

 sutural groove not attaining the base; scutellum small, rounded, flat 

 and nude; under surface with moderately coarse punctures, rather close- 

 set but not dense. Length (cf 9) 34-3-5 mm.; width i. 7-1. 75 mm. 

 Louisiana (Morgan City). Four examples. 



The antennal club in this genus is very gradual in formation, 

 narrowly oval, the outer funicular joints gradually wider in exact 

 continuation of its outline and somewhat similarly micro-pubescent; 

 the first funicular joint is as long as the next four, which are short 

 and subequal. This formation of the antennae is almost exactly as 

 in the preceding Glyptogeraus, which also has a strongly sculptured 

 and semi-glabrous body, but in the latter the anterior coxae are 

 separated by less than their own width and the mandibles are 

 sharper, coming together along their straight and very even inner 

 sides and forming, when closed, an acute triangle; the body, also, 

 is rhomboidal and not evenly and broadly oval as it is in Pachybaris. 



