164 ON THE COLEOPTEEOUS GENUS CEROGLOSSUS. 



All the Chilian specimens of Ceroglossus that I have seen 

 come Tinder one of these forms ; but as many have been de- 

 scribed in Germany that I have not seen, I am not in a position 

 to pronounce upon their importance, and can only add that I 

 have been utterly puzzled by many specimens that I have seen 

 without being able to examine at leisure ; but the specimens 

 in my collection, after a patient examination, resolve them- 

 selves into the species or groups of species mentioned above. 



A collector once assured me that the specimens of any one 

 locality agreed closely in form and colour, while a few miles 

 away another form would exclusively appear. This may be 

 partially true, but I have taken three species, buqueti, glorio- 

 sus, and Valdivice, under logs together. 



In certain groups of insects individual variation seems to 

 be the rule rather than the exception in this country. One 

 morning I took some dozen specimens of a Geometron at 

 ] est on tree-trunks, evidently one species, but no two 

 specimens exactly alike, and I conld cite many similar cases. 

 A beetle, Corynetes ovatus, Solier, varies immensely : over 

 fifty well-marked varieties of this species exist in my col- 

 lection. 



