Numbers of the BULLETIN OF THE FLORIDA STATE MUSEUM, BIOLOGICAL SCIENCES, are published at irregular intervals. Volumes contain about 300 pages and are not necessarily completed in any one calendar year. OLIVER L. AUSTIN, JR., Editor RHODA J. RYBAK, Managing Editor Consultants for this issue: MORRIS F. SKINNER MICHAEL R. VOORHIES Communications concerning purchase or exchange of the publications and all manuscripts should be addressed to: Managing Editor, Bulletin; Florida State Museum; University of Florida; Gainesville, Florida 32611. Copyright 1980 by the Florida State Museum of the University of Florida. Publication date: February 11, 1980 This public document was promulgated at an annual cost of $1,629.16, or $1.629 per copy. It makes available to libraries, scholars, and all interested persons the results of researches in the natural sciences, emphasizing the circum-Caribbean region. Price: $1.65