142 SEKBICOENIA. 



Rah. Mexico, Teapa in Tabasco {H. R. Smith). 



This species is so very close to P. communis that I separate it with reluctance. The 

 colour is, however, different, and the rugose golden-green margins to the thorax are 

 narrower, intermediate in this respect between P. communis and P. purpureipennis. 

 The terminal segment of the abdomen of the male has an arcuate emargination in the 

 middle, with three very short teeth on each side (placed obliquely), the outer tooth 

 rather smaller than the others (fig. 9). 



One male and one female. The former has the elytra purple, the latter has them 

 violet. 



9. Pachyschelus incertus. (Tab. VIII. fig. 4.) 



Ovatus, post medium attenuates, nitidus, subtus niger ; capite cupreo-aureo ; thorace medio cyaneo-aeneo, 



nitido, lateribus late cupreo-aureis, confertim subtiliter rugosis ; elytris purpureis. g . 

 Long. 1£ lin. 



Hah. Panama, Taboga I. {Champion). 



Very close to the preceding, but a trifle broader. It differs in having the rugose 

 surface at the sides of the thorax much more extended, and even the disc is sculptured 

 somewhat in the same way, but much less strongly. The terminal segment of the 

 abdomen has three teeth on each side of the apex (placed obliquely), the innermost the 

 strongest, the second and third each a little smaller ; the two sets of teeth separated by 

 a rather wide space, the margin here being rectilinear (fig. 4). 



A single male example from Tole, Panama, differs from the type in being narrower 

 and in having the rugose surface at the sides of the thorax much less extended. The 

 head is tinted with green in front. The thorax is nearly black, with the sides narrowly 

 bordered with blue-grey. The elytra are purple. The form of the apex of the abdo- 

 men is nearly the same, but the teeth are a trifle shorter. 



y 10. Pachyschelus octodentatus. (Tab. VIII. fig. 5.) 



Ovatus, post medium attenuatus, nitidus, subtus niger ; capite antice viridi ; tborace medio nigro-seneo, late- 

 ribus late viridibus vel aureo-cupreis, rugosis ; scutello nigro ; elytris cyaueis, sat fortiter punctatis, ad 

 apicem laevioribus. $ $ . 



Long. 1 J lin. 



Hah. Panama, Bugaba, David {Champion). 



This closely resembles P. communis, but the coloured portion of the sides of the 



' thorax is much broader, leaving about one third in the middle dark. The terminal 



segment of the abdomen of the male is narrowed at the apex and has eight acute 



equidistant teeth arranged in a curve, the central pair being a little smaller than the 



outer ones (fig. 5). 



11. Pachyschelus robustus. (Tab. VIII. fig. 10.) 



Ovatus, post medium attenuatus, nitidus, subtus niger ; capite tboracisque lateribua viridi-auratis vel 



