PACHYSCHELUS. 143 



aeneis, thoracis disco scutelloque nigris; elytris cyaneis, viridi-cyaneis vel purpurascentibus, punc- 

 tatis. tf 2 • 

 Long. Ij^j- lin. 



Hab. Guatemala, San Geroninio (Champion). 



This species closely resembles P. communis in general form, but is decidedly broader 

 and is larger. The thorax has the rugose sculpture at the sides rather more extended than 

 in P. communis, but not so much as in P. octodentatus ; there are numerous large shallow 

 punctures towards the sides, especially near the posterior angles. The terminal segment 

 of the abdomen of the male is very similar to that of P. octodentatus, but the apex is 

 less produced ; there are eight teeth arranged in a curve, but these are rather stronger 

 than in P. octodentatus, the central pair being distinctly wider than the outside ones 

 (fig. 10). 



12. Pachyschelus diversus. (Tab. VII. fig. 16.) 



Ovalis, nitidus, subtus niger, supra cyaneus; thorace medio scutelloque fere nigris; elytris sat fortiter 



punctatis. <J . 

 Long. 1| lin. 



Hab. Guatemala, Chiacam in Vera Paz (Champion). 



This species is very close to P. communis, but is a little narrower and has the elytra 

 less distinctly angular at the sides. The sides of the thorax have the rugose surface 

 less clearly limited, and this part is only a little paler bluish-green instead of being 

 brassy. The terminal abdominal segment of the male has three similarly formed teeth 

 on each side of the apex, but the space in the middle is wider and more open (less 

 V-shaped), and the first tooth is smaller than the second (fig. 16). 



13. Pachyschelus dubius. (Tab. VIII. fig. 6.) 



Ovalis, nitidus, subtus niger, supra cyaneus ; capite thoraceque medio paullo viridi-aureo-tinctis ; elytris 



punctatis. c? • 

 Long. 11 lin. 



Hab. Guatemala, Teleman in Vera Paz (Champion) ; Panama, Volcan de Chiriqui 

 2000 to 4000 feet (Champion). 



I am unable to give any characters by which this species may be distinguished above 

 from P. diversus, but the terminal segment of the male is differently shaped ; this has 

 a small triangular notch in the middle, with a broad, angularly emarginate process on 

 each side, and a small acute tooth on the outside at a lower level (fig. 6). 



14. Pachyschelus aflmis. (Tab. VIII. fig. 7.) 



Ovatus, nitidus, cyaneus. c? . 

 Long. 1| lin. 



Hab. Panama, Bugaba, Volcan de Chiriqui 3000 feet, Pena Blanca 3000 feet 

 (Champion). 



