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. JOHN WILLIAM HARDY, Editor RHODA J. RYBAK, Managing Editor Consultants for this issue: RAYMOND HEITHAUS THOMAS H. KUNZ 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 @ 1979 by the Florida State Museum of the University of Florida. This public document was promulgated at an annual cost of $1,679.36, or $1.679 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. Publication date: December 20, 1979 Price: $1.70