Be ENTOMOLOGY 
viduals may have been constantly swept out to sea and 
drowned, leaving the more feeble-winged and less venturesome 
individuals behind, to reproduce their own life-saving pecu- 
liarities. 
The Coleoptera of the Hawaiian Islands, studied by Dr. 
Sharp, number 428 species, representing 38 families, and “ are 
mostly small or very minute insects,” the few large forms being 
non-endemic, with little or no doubt; 352 species are at present 
known only from this archipelago. Dr. Sharp distinguishes 
three elements in the fauna: “ First, species that have been 
introduced, in all probability comparatively recently, by artifi- 
cial means, such as with provisions, stores, building timber, 
ballast, or growing plants; many of these species are nearly 
cosmopolitan. Second, species that have arrived in the islands, 
and have become more or less completely naturalized; they are 
most of them known to be wood- or bark-beetles, but some that 
are not so may have come with the earth adhering to the roots 
of floating trees; a few, such as the Dytiscide, or water beetles, 
may possibly have been introduced by violent winds. Third, 
after making every allowance for introduction by these artifi- 
cial and natural methods, there still remains a large portion 
standing out in striking contrast with the others, which we 
are justified in considering strictly endemic or autochthonous.” 
Among the introduced genera are Coccinella, Dermestes, 
Aphodius, Buprestis, Ptinus and Cerambyx. The immigrant 
longicorns appear to have been derived “ from the nearest 
lands in various directions ’’—the Philippine Islands, tropical 
and the same conclusion 
America and the Polynesian Islands 
will probably be found to hold for the other immigrants, when 
their general distribution shall have been sufficiently studied. 
The endemic species number 214, or exactly half the total num- 
ber of species, and are distributed among 9 families, as follows: 
