<50<S H. S. GORHAM 



Mas, abdominis segmentis inlennediis punclo duplici setigero niu- 

 nilis, antennis panilo longioribus. 



Femina, antennis breviusculis. 



Hab. Bolivia, La Paz-Reyes, Rio Beni (L. Balzan). 



The form of the whole insect is fusiform, the widest part 

 being at the middle of the elytra. The general colour is pitchy, 

 the brassy tint being scarcely visible. The base of the antennae 

 and the legs are pitchy-red. The thorax in this species is clearly 

 wider than long; and its disk, is very convex distinctly but very 

 finely punctate; the base is depressed, and its margin a little 

 reflexed, and on each side has a shallow and punctiform fossa. 

 The front angles are distinct from above , and turn a little 

 outwards. 



The elytra are widest about the middle , they have the su- 

 turai stria deepened near their apices, the series of points are 

 most faintly impressed, and the interstices smooth, and scarcely 

 punctured. This insect is very close indeed to C. polita, Gorh. 

 from Panama, it is however distinct; the thorax being wider, 

 less cordate and more clearly punctured, the examples now be- 

 fore me are also on the average smaller. 



It is obviously difficult to form an opinion , as to whether 

 such closely allied species are absolutely distinct; that they are 

 so morphologically renders it necessary to record their diffe- 

 rences; and where they occur in countries as far apart as Bolivia 

 and Panama, under different names. The ultimate test of whether 

 they could interbreed cannot be applied, till it is shewn that 

 both forms occur in the same district. And after all they are 

 not more closely allied than Old world species of many genera, 

 which even occur together. 



