LEIOPLEUEA. 159 



punctured ; there is scarcely any trace of the basal impression near the hind angles ; 

 but the very fine coppery ridge noticed in L. puncticeps may be seen. 



12. Leiopleura nigra. 



Oblongo-ovalis, convexa, nigra, nitida ; thorace convexo, tenuiter punctulato, lateribus haud deplanatis ; elytris 



basi sat fortiter punctatis, postice arcuatim attenuatis. 

 Long. 1| lin. 



Hab. Panama, Bugaba (Champion). 



This species is narrower than L. pulchra, with the thorax more narrowed in front, 

 and with the elytra more gradually acuminate to the apex, more arcuate at the sides, 

 and not angulated behind the middle. The head is moderately closely and distinctly 

 punctured, with a shallow elongate puncture in front. The thorax is evenly convex 

 and without lateral impressions ; the base very lightly transversely impressed ; under 

 the microscope the surface is seen to be closely and finely vermiculate-striolate, gradu- 

 ally becoming slightly rugose at the sides ; with small punctures at the base and sides. 

 The elytra have the basal half moderately strongly punctured, the punctures not very 

 close together ; the lateral impression is well marked, and there is a shallow round 

 impression behind the middle near the side. 



13. Leiopleura trivialis. (Tab. IX. fig. 5.) 



Elongata, angusta, convexa, nigra, nitida; capite antice seneo, convexo, medio longitudinaliter impresso, sat 

 crebre punctato ; thorace disco convexo, subtiliter parce punctulato, lateribus plerumque postice depla- 

 natis, basi leviter transversim impressa ; elytris convexis, postice acuminatis, dimidio basali sat fortiter 

 punctato. 



Long. 1| lin. 



Hab. Panama, Taboga I. (Champion). 



This species has the thorax very convex, with the sides impressed, very narrowly so 

 anteriorly, but broadly at the posterior angles, the impressed part less shining than the 

 disc and finely rugose. The elytra have the basal half strongly punctured, the punc- 

 tures moderately close together, but very irregular ; the apical half is very delicately 

 punctured ; the lateral impression is narrow and rugose ; the sutural area near the apex 

 is slightly flattened, so that towards the side there is a faint indication of a ridge. 



14. Leiopleura lateralis. 



Elongata, sat angusta, convexa, nigra, nitida ; capite antice viridi, minus convexo, subtiliter rugoso, medio 

 longitudinaliter impresso ; tborace convexo, lateribus postice deplanatis, viridi marginatis, basi transversim 

 leviter impressa ; elytris punctatis. 



Long. If lin. 



Hab. Panama, Volcan de Chiriqui 3500 feet (Champion). 



This species is less narrow than L. trivialis and also relatively shorter, and is some 



