Spain. 



51. Institut d'Estudis Catalans, Seccio de Ciencias, Barcelona. 



Delegate : Dr. Joseph M. Bofill. 



52. Museo de Ciencias Naturales, Madrid. 



Delegate : Don R. Garcia y Mercet. 



53. Real Academia de Ciencias y Artes, Barcelona. 



Delegate: R. P. Longinos Navas, SJ. 



54. Razon y Fe, Madrid. 



Delegate: R. P. Longinos Navas, SJ. 



55. Sociedad Aragonesa de Ciencias Naturales, Zaragoza. 



Delegate : R. P. Longinos Navas, SJ. 



Sweden. 



56. Government of Sweden. 



Delegate Prof. Yngve Sjöstedt. 



57. Kongl. V etenskaps- Akademien, Stockholm. 



Delegate : Prof. Yngve Sjöstedt. 



Switzerland. 



58. La Chancellerie de la Confédération Suisse. 



Delegate : Dr. A. von Schulthess. 



59. N aturforschdende Gesellschaft, Zürich. 



Delegate : Dr. A. von Schulthess. 



Turkey. 



60. Ministry of Agriculture of the Ottoman Empire 



Delegate : Mehmed Sureya. 



U.S.A. 



61. American Association of Economic Entomologists. 



Delegate : Prof. Herbert Osborn. 



62. American Entomological Society. 



Delegates : Prof. P. P. Calvert. 

 Dr. Henry Skinner. 



63. The Academy of Natural Sciences of Philadelphia. 



Delegates : Dr. Henry Skinner. 

 Prof. P. P. Calvert. 

 Dr. W. J. Holland. 



