cxii FAUNA HAWAIIENSIS 



Review of the Coleoptera. 



Forty-three (or if the Lyctidae be considered as a group in the Bostrychidae 42) 

 of the 85 families of Coleoptera, as enumerated by Sharp in the Cambridge Natural 

 History, have representatives in the Hawaiian islands. 



Of these families, however, 26 are, as I believe on various kinds of evidence, 

 entirely foreign to the natural fauna, being introductions by man, and four others 

 (Hydrophilidae, Dytiscidae, Anthicidae and Coccinellidae) are represented by either 

 imported or naturally immigrant species, likely to be found elsewhere. Excluding 

 these, the real Hawaiian fauna of beetles represents only 17 families. 



The total number of species described or enumerated' is 1288, these being included 

 in 229 genera. 



The 26 families above mentioned as being foreign to the natural fauna are 

 represented by only 71 species and these are scattered in no less than 57 genera. 

 However, as many of the families belonging to the true native fauna are represented 

 not only by species and genera that are really native, but also by introduced ones, 

 it is necessary to analyse these 1 7 families in order to understand the true nature of 

 the fauna. Thus in the Cerambycidae 10 of the species, each belonging to a different 

 genus, are importations by man, leaving five genera with 52 species native. 



The Curculionidae have 14 foreign species (one or two, however, being natural 

 immigrants) in nine genera; 132 species in 12 genera are of the true fauna. The 

 genus Pentarthruni contains imported and a native species. 



The Scolytidae have seven foreign species in three genera ; 1 7 apparently native 

 species of Xyleborus, which also contains foreign forms. 



There are 136 endemic species of Proterhinidae, at present all included in the 

 genus Proterhinus. 



The Cistelidae are represented only by endemic forms, the two genera containing 

 12 species. 



The Tenebrionidae have eight foreign species in six genera ; one genus with a 

 single species is possibly endemic, but will quite probably be found elsewhere. 



The Cioidae have three probably foreign species in one genus, leaving 39 truly 

 endemic forms in two genera. 



The Anobiidae have four foreign species in three genera, and 134 endemic in 

 the same number. 



The Elateridae have five foreign species in five genera ; the native fauna has 

 also five genera with 76 species. 



The Lucanidae have one genus endemic, with seven species. 



This does not include a number of species introduced for economic reasons, nor a number of 

 recent casual introductions, now well established. 



