Kaoru Kitajima, Ph.D. candidate, University of Illinois. Comparative 

 Study of Photosynthetic and Growth Characteristics of Neotropical Tree 

 Seedlings on Barro Colorado Island, with Dr. Alan Smith, from June 4 

 through August 3, 1987. 



Robin Manasse, Ph.D. candidate, University of California, Davis. Genetic, 

 Anatomical and Ecological Correlates of Seed Size Variation in Crinum 

 erubescens ( Amaryllidaceae) , with Dr. Joseph Wright, from June 1 to June 

 30, 1987. 



David M. Olson, Ph.D. candidate, University of California, Davis. The 

 Effects of Elevation on the Ant Fauna and Other Litter Organisms of 

 Tropical Moist Forests in Panama, with Dr. Donald Windsor, from June 22 

 through September 4, 1987. 



Stephen Pratt, B.S. candidate, Harvard College. Foraging and Recruitment 

 Behavior in the Ponerine Genera Ectatomma and Odontomachus , with Dr. 

 Donald Windsor, from April 11 through July 11, 1987. 



Andrew Stuart Pullin, Ph.D., University of Leeds, United Kingdom. 

 Environmental Control of Life-History Strategies in Tropical Lepidoptera, 

 with Dr. Donald Windsor, from November 22, 1987 through January 17, 1988. 



David Stern, B.S. candidate, Cornell University. The Behavior and 

 Morphology of Male Euglossine Bees, with Dr. David Roubik, from February 1 

 through May 31, 1988. 



David A. Wiedenfeld, Ph.D. candidate, Florida State University. 

 Ecomorphology and Foraging Behavior of Resident and Migrant Populations of 

 the Yellow Warbler, Dendroica petechia , with Dr. Neal Smith, from January 

 15 through February 27, 1987. 



Exxon Fellowship & Assistantship Program 



Onel Arias, Exxon Fellowship Extension, Universidad de Panama. Evaluacion 

 Hidrografica del Rio Abudi, with Dr. James Karr, from February 16 through 

 August 15, 1987. 



Eliseo Hector Barrios, Exxon Assistantship, Zoology Institute USSR. 

 Exclusive Male Parental Care in the Neotropical Harvestman, Zygopachylus 

 albomarginis (Opiliones: Gonyleptidae) , with Giselle Mora, from August 3, 

 1987 through January 3, 1988. 



Rita Bethancourt, Exxon Fellowship, Universidad de Panama. Efecto de 

 Fertilizacion con P y N en la Formacion de Micorrizas y Rhizobium en el 

 Crecimiento Temprano de Acacia mangium , with Dr. Gilberto OcafSa, from 

 August 3 through November 3, 1987. 



Aura Correa, Exxon Assistantship, Universidad de Panama. Mating System 

 and Social Evolution in Zoroptera, with Jae Choe, from November 24, 1986 

 through May 8, 1987. 



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