INVERTEBRATE ZOOLOGY 



Mr. Frederick M. Holbrook, who identified and catalogued turtles in 

 1898, and Dr. L. W. Williams, who made the large model of the com- 

 mon squid in 1906. 



The present Scientific Staff of this Department includes also three 

 Honorary Curators: Professor William Morton Wheeler, Dr. Alexander 

 Petrunkevitch, and Professor Aaron L. Treadwell. 



Dr. Alexander Petrunkevitch, an authority on American spiders, Alexan der 



Petrunke- 



became an Honorary Curator of Arachnida in 1909. Dr. Petrunkevitch vitch, Ph.D. 

 has rendered valuable service to the Museum through correspondence, 



Aaron L. 



exchange, and the general enrichment of the collections. Treadwell, 



Professor Aaron L. Treadwell, of Vassar College, was appointed p h s D M ' S- ' 

 Honorary Curator of Annulata in 1909. 190Q - 



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