Summary: The text discusses the work carried out during the years 1899 and 1900 on the Fauna and Geography of the Maldive and Laccadive Archipelagoes. Edited by J. Stanley Gardiner, the text covers various aspects including collections of specimens, contributions from experts, and the assistance provided during the expedition. Detailed reports on species like the Land Crustaceans of Minikoi, Marine Crustaceans like Xanthidae, and Crabs such as Actaea cavipes are provided, along with new species descriptions. Examination of variations within species like Gonodactylus chiragra highlights the structural differences and the interpretation of these differences. The text also covers the taxonomy, natural history, and morphological variations within species like Oecophylla smaragdina, Liomera, and Gecarcinidae, providing valuable insights into the marine life of the region. Through detailed descriptions and illustrations, the text sheds light on the biodiversity and morphological adaptations of various marine species in the Maldive and Laccadive Archipelagoes.