AMCS Bulletin 6 Studies on the Caves and Cave Fauna of the Yucatan Peninsula Edited by James R. Reddell 296 pages 1977 (PDF reprint 2005)

This volume includes the first results of an intensive study of the cavernicole and related endogean fauna of the Yucatan Peninusla. Also included are accounts of species from other parts of Mexico, Guatemala, and Belize. The long final article, which was also originally published as an offprint, discusses the geology and physiography of the Yucatan and the history of cave studies there and also contains brief descriptions of all caves that have been biologically investigated in the Mexican part of the peninsula.
Available as an 86 MB facsimile PDF file on a CD along with Bulletins 3, 4, and 5.

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Table of Contents
	Preface
1	On some earthworms from North American caves, by G. E. Gates
5	Mesocyclops ellipticus Kiefer from a Mexican cave, by H. C. Yeatman
9	Two blind species, one new, of terrestrial isopod crustaceans (Oniscoidea: Philosciidae) from Yucatán and Guatemala, by G. A. Schultz
15	A new genus and two new species of subterranean amphipod crustaceans (Gammaridae s. lat.) from the Yucatán Peninsula in México, by J. R. Holsinger
27	A review of the genus Antromysis (Crustacea: Mysidacea), including new species from Jamaica and Oaxaca, México, and a redescription and new records of A. cenotensis, by T. E. Bowman
39	Scorpions of the genus Centruroides Marx from the Yucatán Peninsula (Arachnida, Scorpionida, Buthidae), by F. W. Wagner
49	Scorpions of the genus Diplocentrus from the Yucatán Peninsula (Scorpionida, Diplocentridae), by O. F. Francke
63	Preliminary list of the pseudoscorpions of the Yucatán Peninsula and adjacent regions, with descriptions of some new species (Arachnida: Pseudoscorpionida), by W. B. Muchmore
79	A review of the cavernicole Schizomida (Arachnida) of México, Guatemala, and Belize, by J. M. Rowland and J. R. Reddell
103	Report on cavernicole and epigean spiders of the Yucatán Peninsula, by W. J. Gertsch
133	On two ricinuleids from the Yucatán Peninsula (Arachnida: Ricinulei), by W. J. Gertsch
139	Laniatores (Opiliones) of the Yucatán Peninsula and Belize (British Honduras), by C. J. Goodnight and M. L. Goodnight
167	Millipedes in the collection of the Association for Mexican Cave Studies IV. New records and descriptions chiefly from the northern Yucatán Peninsula, México (Diplopoda), by N. B. Causey
185	The subterranean and epigean Catopinae of México (Coleoptera: Leiodidae), by S. B. Peck
215	A prelminary survey of the caves of the Yucatán Peninsula, by J. R. Reddell