1897.] The Origin of the Galapagos Islands. 675 
The family Ceratobatrachide Boulenger with Ceratobatrachus 
günteri Boul. is only found there. The other species are: 
Ranide. 
Rana bufoniformis Boul., nearest to Rana kuhlii (Schleg.) 
Dum. and Bibr. from the Indian Archipelago (Java, Borneo, 
Celebes), S. China. 
_ Rana guppyi Boul., as large as the bull-frog, nearest to Rana 
gruniens Daud., Amboyna and Java. 
Rana opisthodon Boul., near R. guppyi Boul. and R. gruniens 
Daud. This form develane, in the egg without metamorphosis, 
like Hylodes martinicensis Tschudi. 
Rana krefftii Boul., related to R. erytraea Schleg., from the 
East Indian Avehivelag and the Malayan Peninsula. 
Cornufer dorsalis A. Dum., also found on the Fiji Islands. 
Cornufer guppyi Boul., related to C. dorsalis A. Dum. 
Cornufer solomonis Boul., near C. corrugatus A. Dum., from 
New Guinea and Duke of York I 
Batrachylodes vertebralis Boul., only known from the Solomon 
Islands. 
Hylide. 
Hyla macropus Boul. 
Hyla thesaurensis Peters. 
Hyla lutea Boul. 
The presence of this peculiar Batrachian fauna on the Solo- 
mon Islands would be sufficient proof for their continental 
origin, but this is also shown by the geology of the group." 
18 Guppy, H. B. The Solomon sages iepr Geology, General Features and 
Suitability for Colonization. London 
There have been found aaa act ihanion serpentines and 
old sedimentary rocks represented by quartzites and crystal- 
line schists. 
New Caledonia is surrounded by a deep sea of 2000-4000 m., 
but it is a typical continental island, as is shown by the geol- 
ogy.” There are extensive primitive schists, gneiss and other 
1° Bernard, Augustin. L’Archipel de la Nouvelle-Calédonie. Paris. Hachette 
et Cie, 1895, p. XXIV, 458. Deux cartes et beaucoup de figures. This is a very 
important work, not only for the geology of New Caledonia, but for the whole 
western region of the Pacific Ocean. 
