274 D. Suarr— Topographical Table of Hawaiian Coleoptera. 
Thus whereas two-thirds of the species in Hawaii are autochthonous, in Kauai, 
so far as we know at present, only one-third are autochthonous, two-thirds being 
foreigners. This conclusion, however, is not of importance, and will be subject, 
no doubt, to great alteration ; but still it is possible that Oahu, when stripped of its 
foreign forms, will not have so great a predominance over the other islands in 
number of species as it possesses under a mere indiscriminating census enumera- 
tion. 
Limiting our investigation to the autochthonous forms, it is interesting to ask 
how large a proportion of the species are confined to one island, and how many are 
more widely distributed in the archipelago, and on doing this we meet with a 
very striking result, viz. that out of the 214 autochthonous species, 200 are con- 
fined to a single island, only fourteen out of the whole number being found in 
more than one island. Of these fourteen species five are common to Hawaii and 
Maui; two to Hawaii and Oahu; one to Hawaii and Lanai; two to Oahu and Kauai; 
one to Hawau, Oahu, and Kauai; one to Hawaii, Maui, and Oahu; one to Lanai, 
Oahu, and Kauai; and one to Hawaii, Maui, Oahu, and Kaui. That there isa 
striking endemicity as regards each separate island is therefore clear, although it is 
probable that future more exact and fuller knowledge will modify the above 
statement considerably. What are true species and what mere morphological 
forms is a study that has scarcely been comménced in Coleopterology, and one 
that im the Sandwich Islands will evidently be attended with peculiar difficulties. 
But there is perhaps no part of the world whose fauna could throw so much light 
on this difficult question—a question that I believe is destined to become of great 
importance in the future of Zoology—as that of this remote and isolated insular 
group. 
There is some evidence of generic endemicity in the case of the separate 
islands. For example, we find that the genus Metromenus has in all nineteen 
species, and of these seventeen are found in Oahu and two in Maui, the other 
islands not having yet yielded any species of the genus. Maui has both the two 
species of the anomalous Disenochus, which is found nowhere else, and this same 
island the highly peculiar Atrachycnemis, which has as yet but one species. In 
the genus Cyclothorax we have twenty-one species in the archipelago, six peculiar 
to Hawaii, eleven peculiar to Maui, three to Oahu, while one is common to Hawaii 
and Maui. Thus Oahu possesses ninety per cent. of the whole Metromeni, but 
only about thirteen per cent. of the genus Cyclothorax. So too in the Anobiini 
we find that Oahu possesses five out of seven of the species of Mirosternus, while 
it has only one out of. the eleven species of Holcobius and Xyletobius. Heter- 
amphus, with four species, has been found only in Oahu. ‘This part of the investi- 
gation is, however, in the present state of Zoology of little practical importance, 
owing to the indefinite, even mystical, nature of the zoological expression 
““ venus.” 
