![Linsley, E. G. & Usinger, R. L. 1966. Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences 33 (7): 113-196. Linsley, E. G. & Usinger, R. L. 1966. Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences 33 (7): 113-196.](http://darwin-online.org.uk/converted/scans/1966_Galapagos_A533_081.jpg)
Linsley, E. G. & Usinger, R. L. 1966. Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences 33 (7): 113-196.
Priced and illustrated catalogue of optical instruments, made, imported and sold, wholesale and retail /
The Caridean Shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition, 1907-1910, Part 4: Families Oplophoridae and
![Linsley, E. G. & Usinger, R. L. 1966. Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences 33 (7): 113-196. Linsley, E. G. & Usinger, R. L. 1966. Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences 33 (7): 113-196.](http://darwin-online.org.uk/converted/scans/1966_Galapagos_A533_007.jpg)