138 NORSE 



particularly Heather Copland, Mario Estevez, Virginia Fox-Norse, 

 Alan D. Havens, Paul Sammarco, Avril Siung, Michael Weber, and 

 Bernd Werding. I am indebted to the directors and staffs of the 

 following institutions for providing field, laboratory, and library 

 facilities and taxonomic reference collections: the University of 

 Arizona— University of Sonora Cooperative Marine Station; the 

 Smithsonian Tropical Research Institution; Colombia's Institute for 

 the Development and Management of Natural Resources; Pigeon Key 

 Marine Environmental Station, University of Miami; Discovery Bay 

 Marine Laboratory, University of the West Indies; the Caraibisch 

 Marien-Biologisch Instituut (CARMABI); the Instituto Colombo- 

 Aleman de Investigaciones Cientificas "Punta de Betin"; the Harvard 

 University Museum of Comparative Zoology; the American Museum 

 of Natural History; the Allan Hancock Foundation of the University 

 of Southern California; and the University of Iowa. Donald 

 Doumakes, Virginia Fox-Norse, and James H. Thorp gave valuable 

 criticism of the manuscript. Funds were provided, in part, by the 

 Allan Hancock Foundation, University of Southern California; the 

 Organization for Tropical Studies; the Society of Sigma Xi; the 

 Theodore Roosevelt Memorial Fund, American Museum of Natural 

 History; National Science Foundation grant BMS 74-22718 to Hugh 

 Dingle; and National Institute of Mental Health grant (5 

 TOl 10641-10) to the Neurobehavioral Sciences Program, University 

 of Iowa. This is contribution No. 157, Discovery Bay Marine 

 Laboratory. 



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