CHALCANGIUM.— COLOBOGASTER. 3 3 



1. Chalcangium longipenne. (Tab. III. figg. 1, 1 a.) 



Elongatum, sat angustum, parum convexum, ameum ; thorace transverso, creberrime punctato, ad basin subito 

 paullo angustato, angulis posticis acutis; elytris quam thorax latioribus, postice gradatim angustatis, 

 bicostatis, confertim subtiliter punctatis, guttis irregularibus nigris laevibus, marginibus ad apicem acute 

 serratis. 



Long. 10 lin. 



Hab. Mexico, Puebla {SalU). 



The head is densely punctured and rugose in front. The margin of the clypeus is 

 slightly flexuous, not notched nor emarginate in the middle, where it is shining and 

 olive-green. The antennae are black. The thorax has the punctures on the disc 

 moderately close, and the smooth interspaces bronzy black, the sides being coarsely 

 punctured; the posterior angles are impressed above, and just above this there is 

 on each side an ovate oblique impression. The scutellum is smooth, coppery, very 

 acutely prolonged. The elytra are one fifth broader than the thorax; the surface is 

 finely and very densely punctured, but there are very numerous, irregular, subconfiuent, 

 nearly black spots or spaces. Each elytron has two costse : the first is entire, more 

 distinct at the apex than at the base ; the second is short, and does not extend to the 

 base or apex ; besides these there is a short costa near the scutellum, this costa joining 

 the suture not far from the base, and there is a short submarginal costa at the apex. 

 The prosternal process is smooth and shining, pitchy at the apex. The first segment 

 of the abdomen has a slight median impressed line ; the second to the fifth segments 

 have a fine median raised line, the fifth segment having, moreover, a raised line on 

 each side. 



COLOBOGASTER. 



Colobogaster, Solier, Ann. Soc. Ent. Fr. ii. p. 308 (1833). 



This genus was proposed by Solier for Buprestis quadridentata, Fabr. It should, 

 however, scarcely be separated from Chrysobothris ; I merely adopt it here as a matter 

 of convenience for the large species allied to C. quadridentata, these having simple 

 anterior femora. 



1. Colobogaster puncticollis. (Tab. III. fig. 2.) 



Elongata, depressa, sat nitida, viridi-aurata ; capite dense evidenter punctato ; thorace quam longitudo duplo 

 latiore, antice oblique angustato, supra utrinque planato, crebre punctato, postice juxta scutellum parum 

 convexo fere lsevi, disco nigro-violaceo, linea mediana viridi, lateribus post medium fere parallelis, per- 

 parum sinuatis ; scutello elongato, acuminato, obsolete parce punctulato ; elytris nigro-violaceis, ad basin 

 thorace vix latioribus, apicem versus paullo angustatis, creberrime subtiliter punctulatis, eostis sex parum 

 elevatis instructis, apice leviter emarginato ; abdominis segmentis late cyaneo marginatis ; segmento ultimo 

 late truncato, medio triangulariter inciso, utrinque leviter sinuato, angulis lateralibus acutis. 



Long. 16 lin. 



Hab. Mexico, Orizaba (SalU) ; Nicakagtja, Chontales (Janson). 

 biol. centr.-amer., Coleopt., Vol. III. Pt. 1, October 1887. F 



