TWENTY-FIFTH ANNUAL REPORT 113 



Miss Isabel Cooper, Bryn Mawr College — Artist. 



Alfred Emerson, Cornell University — Life History of Kar- 

 tabo Termites. 



J. F. M. Floyd, University of Glasgow — Parasites of Verte- 

 brata. 



Forbes, Cornell University — Organs of Hearing in Lepi- 

 doptera. 



H. Gifford, University of Nebraska — Comparative Ophthal- 

 mology. 



G. I. Hartley, Cornell University — Relationships of Certain 

 Non-oscine Birds. 



Clifford Pope, University of Virginia — Life Histories of 

 Kartabo Fish. 



Miss Mabel Satterlee, Columbia University — Coloration of 

 Ameiva and the Painting of Optical Fundi. 



T. V. Smolucha, New Jersey — Photography and Pen-and- 

 ink Drawing. 



Miss Anna Taylor, South Carolina — Botanical Painting. 



John Tee-Van, Zoological Society — Ecology of Certain Lepi- 

 doptera. 



Wm. M. Wheeler, Harvard University — Ants of Kartabo. 



C. A. Wood, Stanford University — Optical Fundi of Birds 

 and Other Vertebrates. 



Twenty or thirty papers are in course of preparation and 

 will be published, beginning with the autumn of 1921. Only 

 the barest outlines can be given of some of the researches at 

 present being carried on. 



In the field of biology, the three aspects to which most atten- 

 tion has been paid have been color, its occurrence, development 

 and use; breeding, with especial attention to season, courtships 

 and nests; and food, with detailed examinations of stomachs of 

 all classes of vertebrates. 



About sixty species of mammals have been recorded from 

 the district, ranging from mouse opossums to dolphins. One of 

 the rarest is the two-toed or silky anteater, of which three have 

 been seen, the last individual in the Colony House at the Penal 

 Settlement. The mammals of British Guiana possess a unique 

 historical interest, from a taxonomic point of view, for most of 



