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C. SKOTTSBERG 



genus; the systematic position of Juania has not been stated. Together they 

 include 6 species. Of the remaining 12, 7 belong to genera with a large to world- 

 wide area including at least some part of America, and one belongs to an American 

 genus. Eidia (3 sp.) and Lobophora are essentially boreal. The 8 non-endemics 

 are found in Chile or in some other part of S. America. 



The total absence of all indigenous Rhopalocera is remarkable. 



Diptera. — At present 157 named species belonging to 27 families have been 

 reported. Nine or ten species at least have been introduced with the human traffic. 

 147 are thought to be indigenous and of these 94, 64%, are endemic. Con- 

 sidering our insufficient knowledge of the dipterofauna of Chile, too much weight 

 should not be laid on these figures, but even if quite a iew of the insular en- 

 demics will, in the future, be discovered on the mainland, I trust that a fair 

 number will remain, sufficient to show the peculiar character of the fauna. Be- 

 sides it can be foreseen that Dr. KuscilEL's new material will bring to light 

 some remarkable additions. 



The fauna is not a haphazard crowd of wind-drifted flies. It gets its stamp 

 less from the few endemic genera — of 10 new genera proposed by Enderlein 

 only 4 remain — than from the presence of six non-endemic, S. American or 

 more wide-ranging genera with six or more species each, Molop kilns with 19 

 (all end.), Scc7tciia with 16 (all end.), LiDionia with 13 (12 end.), Leptocera 

 with 10 (3 end.), Myictop/iila with 7 (2 end.) and Podouoiiuis with 6 (4 end.), 

 together 71 species of which 56 (79%) are endemic. 



The Neotropical-Chilean character of the fauna is obvious. This is what we 

 expect quite apart from what we may think about the history of the fauna, but 

 the almost total absence of even a small austral-circumpolar or Pacific element 

 is noteworthy; the only examples would be Prosopaiitnnn flavipes (austral- 

 tricentric) and Fiiccliia Ditcnnedia^ said to be distributed over "Oceania". There 

 are some striking cases of disjunction, suggesting bipolarity [Lioyella, Hydrobaoius^ 

 PodonoDius Kicjfcri), but the distances will perhaps be lessened when the dis- 

 tribution becomes better known. 



Coleoptera. — I want to emphasize that of Dr. KuscilEL's collections ony 5 

 families have been worked out; it is to be regretted that no list of the Cur- 

 culionids is available. On the other hand I believe that the beetles inhabiting 

 the Chilean mainland are better known than the flies and some other insect 

 groups so that the proportion between endemics and non-endemics will not 

 undergo very great change in the future. 



The number of named species hitherto reported from Juan Fernandez is 

 103, belonging to 19 families, perhaps little more than ^'s of the species found 

 there. Eleven species are anthropochorous. Of the remaining 92 no less than 74 are 

 endemic — 80%, only 20% having been found elsewhere. Future research will 

 alter these figures, I suppose, a number of island endemics will be stated to 

 extend to Chile and vice versa, but on the other luind we have good reason 

 to expect that practically all Curculionids collected but not yet described will 

 prove to be endemic; of 22 indigenous species enumerated by AURIVILLIUS 21 

 were described as new. 



