CHAP. XIII 



THE GALAPAGOS ISLANDS 



285 



all the species are peculiar. The observation of Captain 

 Collnet, quoted by Mr. Darwin in his Journal, that drift- 

 wood, bamboos, canes, and the nuts of a palm, are often 

 washed on the south-eastern shores of the islands, 

 furnishes an excellent clue to the manner in which many 

 of the insects and land-shells may have reached the 

 Galapagos. Whirlwinds also have been known to carry 

 quantities of leaves and other vegetable debris to great 

 heights in the air, and these might be then carried away 

 by strong upper currents and dropped at great distances, 

 and with them small insects and mollusca, or their eggs. 

 We must also remember that volcanic islands are subject 

 to subsidence as well as elevation ; and it is quite possible 

 that during the long period the Galapagos have existed 

 some islands may have intervened between them and the 

 coast, and have served as stepping-stones by which the 



for 1877 (p. 81), with a few additions collected by the U. S. Fish Com- 

 mission Steamer Albatross, and published by the IJ. S. National Museum 

 in 1889. 



Carabid^. 

 Feronia calathoides. 



,, insularis. 



, , galapagoensis. 

 Amblygnathus obscuricornis. 

 Solenophorus galapagoensis. 

 Notaphus galapagoensis. 



DYTISCIDiE. 



Eunectes occidentalis. 

 Acilius incisus. 

 Copelatus galapagoensis. 



Palpicornes. 

 Tropisternus lateralis. 

 Philhydrus sp. 



Staphylinid^. 

 Creophilus villosus. 

 Necrophaga. 

 Af^ribis serrativentris. 

 Phalacrus darwinii. 

 Dermestes vulpinus. 

 Malacoderms. 

 Ablechrus darwinii. 

 Corynetes rufipes. 

 Bostrichus unciniatus. 

 Tetrapriocerca sp. 



Lamellicornes. 

 Copris lugubris. 

 Oryctes galapagoensis. 



Elaterid^. 

 Physorhinus galapagoensis. 



Heteromera. 

 Allecula n. s. 

 Stomion helopoides. 



, , Isevigatum. 



Ammophorus obscurus. 



, , cooksoni. 



,, bifoveatus. 



Pedonceces galapagoensis. 



,, pubescens. 



Phaleria nianicata. 



CURCULIONID^. 



Otiorhynchus cuneiformis. 

 Anchonus galapagoensis. 



LONGICOllNIA. 



Mallodou sp. 

 Eburia amabilis. 



Anthribid^. 

 Ormiscus variegatus. 



Phytophaga. 

 Diabrotica limbata. 

 Docema galapagoensis. 

 Longitarsus lunatus. 

 Securipalpes. 

 Scymuns galapagoensis. 



