Studies on the variation, distribution, and evolution of the genus Partula: The species of the Mariana Islands, Guam and Saipan
Crampton HE. 1925. Studies on the variation, distribution, and evolution of the genus Partula: The species of the Mariana Islands, Guam and Saipan. Carnegie Institution of Washington. Washington, D.C.
The present volume is the second to be completed in a series of detailed analytical studies on the genus Partula. The first volume dealt with the species of Tahiti. The present volume is concerned with the intrinsic nature and with the environmental relations of the species of Partula which exist in the Mariana Islands. Attention is focused directly upon the characters of the snails themselves, the diversities of such qualities, and the distribution of the several species and their distinguishable variations. In addition, all of the ecological conditions are considered with regard to their possible effects upon the presence, nature, and distribution of the snails. Field-work was carried out in Guam with an approach to complete exploration, and also to a partial extent in the northward island of Saipan. A rare and unfigured species, P. fragilis of Ferussac, has been found in Guam in sufficient numbers for a complete study. A new species has been discovered in Guam on the remote peak of Mount Salifan, and on account of the locality the new form is named P. salifana.
- Type
- Book
- Authors
- Crampton, Henry
- Date of Issue
- 1925-03
- Publisher
- Carnegie Institution of Washington
- Units
- AMME , PACN , WAPA
- Keywords
- Abundance (Biodiversity), Animal Studies, Distribution, Distribution (Biodiversity), Evolution, Guam, Invertebrates, Observations, Partula, Presence (Biodiversity), Saipan CNMI, tree snails