LEIOPLEUBA. 161 



Very convex, almost as much narrowed anteriorly as posteriorly. The head is convex, 

 longitudinally impressed in the middle, finely reticulate-striolate, with some punctures 

 here and there. Thorax evenly convex, with no basal impression, the margins scarcely 

 impressed at the posterior angles ; finely reticulate-striolate, with a few punctures 

 scattered over the surface. The elytra are moderately strongly punctured, the punc- 

 tures not very far apart, rather less distinct posteriorly. 



17. Leiopleura parvula. (Tab. IX. fig. 7.) 



Convexa, nigra, nitida ; capite parvo, medio leviter sulcato ; thorace antice oblique angustato, parce punctulato ; 



elytris purpurascentibus, striato-punctatis, postice acuminatis. 

 Long. 1| lin. 



Hab. Panama, David (Champion). 



The head is closely reticulate-striolate, longitudinally impressed in front, narrow 

 between the eyes, with a few shallow punctures ; the eyes are not prominent. The 

 thorax is obscurely tinted with purple ; closely and finely reticulate-striolate, but on the 

 disc the striolse are in parts almost effaced ; there are a few shallow punctures rather 

 widely separated from each other. The elytra are very convex, with a light impression 

 at about one-third from the apex, leaving the suture beyond this more raised ; they 

 are punctured in lines, the punctures at the base being rather strong but diminishing 

 posteriorly ; the interstices have also some small punctures. 



A single example from Panzos in Vera Paz appears to be referable to the same species. 



18. Leiopleura difficilis. 



Convfexa, nitida, nigra ; capite antice aureo-aeneo ; thorace obscure brunneo-seneo, angulis anticis aureo-tinctis, 



parce punctato ; elytris crebre punctatis, ante basin transversim plicatis. 

 Long. 1| lin. 



Hab. Panama, Caldera in Chiriqui 1200 feet (Champion). 



This species closely resembles L. parvula, but the head is not quite so narrow and is a 

 little more impressed on the forehead ; and the elytra are somewhat longer, rather less 

 convex, and slightly narrowed before the apex. The head in front is brassy, with the 

 reticulate striolation deeper, so that the surface is more rugose. The thorax is similar, 

 but has the region of the anterior angles brassy ; the reticulation is more distinct, and 

 verges into rugosity at the sides ; the punctures are small but distinct, and are plainly 

 visible towards the sides, which they are not in L. parvula. The elytra have the 

 punctuation rather strong, close, and confused, and near the base the surface is slightly 

 wrinkled. 



A specimen from Belize appears to be referable to the same species, but it has no 

 transverse wrinkles on the elytra. 



biol. centk.-amee., Coleopt., Vol. III. Pt. 1, November 1889. Y 



