THE CHIEF COLEOPTEROUS I'AUN E. 



57 



Lychnus. Tasmania. 

 Oregus. New Zealand, 

 Promecoderus. New Holland. 

 Anheterus. Adelaide. 

 Adolela. Swan Biver. 

 Parroa. Swan River. 

 Cascelius. South Chili. 

 Broscosoma. Europe. 

 Miscodera. Europe and North America. 

 Baripus. Montevideo, Port Famine, Chili. 

 Onemalobus (Cnemacantkus). Chili and Patagonia, one spe- 

 cies extending into Bolivia. 



Gnathoxys. Australia. 



The family is apterous, so that no theory of dispersal by powers 

 of flight will apply. 



The Hydropori and Colymbetidce of New Zealand are exceed- 

 ingly similar to our species — one species so much so, that it has 

 been supposed to be introduced. Staphylinus oculatus is close to 

 the Australian Stapliylinus erythrocephalus, which is also found 

 there ; and it may be noted incidentally that there is a greater re- 

 semblance between the latter and#£. variegatus, from Montevideo, 

 than to any Chilian species. This may be a key to some date 

 or order of events ; but one such key is not enough to unlock the 

 close-bound history of these former epochs. One or two very 

 European-like Longicorns occur ; and even those which seem 

 most puzzling, if studied in relation to our own species, will, I 

 think, be found to belong to the same type; for in stance, Hexatrichia 

 pulverulenta,W estw., is only an enlarged Pogonocherus, as is Oopsis 

 nutator, from Polynesia ; and Pogonocherus is surely microtypal. 

 That some of the Longicorns have a relationship to those of 

 New Guinea and the Judian Archipelago (Tmesisternus) is only 

 what we might expect. I have had my attention drawn to a 

 species which is described in the zoology of the ' Novara ' voyage 

 as inconsistent with my hypothesis — a species of Acanthoderus, 

 a genus the metropolis of which is now Brazil. But, curiously 

 enough, notwithstanding this, the genus Acanthoderus occurs iu 

 the Miocene beds of Europe, and three species still survive in the 

 northern regions, two in Europe and one in North America. 

 How the genus comes to be so strongly represented in the Bra- 

 zilian fauna is another question. It may be a type of universal 



