1906.] NATURAL SCIENCES OF PHILADELPHIA. 587 



the purpose of making entomological collections, hut a serious attack 

 of illness materially interfered with his work. 



Dr. H. A. Pilsbry spent October and November in the prosecution 

 of his studies on the molluscan fauna of Arizona. 



In addition to these extended expeditions many local collecting 

 trips have been undertaken by the members of the Museum staff and 

 much valuable material secured. 



Among the more notable accessions to the Museum during the year 

 may be mentioned the Gulick collection of Hawaiian mollusks, which 

 formed the basis of Mr. Gulick's well-known paper on "Evolution, 

 Racial and Habitudinal"; the collection of bird skins formed by the 

 late Canon Tristram, of Durham, England, representing over 3,000 

 species from all parts of the world, a large proportion of them new to 

 the Academy's collection; and another valuable collection of marine 

 invertebrates from Naples, presented by Dr. Henry C. Chapman. 



A nimiber of valuable mammals received from the Zoological Society 

 of Philadelphia or by purchase have been mounted by the taxidermist 

 and many others prepared as skins or skeletons. Considerable addi- 

 tions have been made to the alcoholic series in Herpetology. 



In addition to the services rendered by the Museum staff the Curators 

 are indebted to Dr. P. P. Calvert, Messrs. E. T. Cresson, Jr., and H. W. 

 Wenzel for aid in the Entomological department, and to Mr. S. S. 

 Van Pelt in the Herbarium. 



Details of the year's work in several departments are appended. In 

 addition Dr. J. P. Moore has continued the care and study of the 

 Helminthological collections, and Mr. H. W. Fowler of the Fishes, 

 while Miss H. N. Wardle has made progress in cataloguing and arrang- 

 ing the Archseological collections. 



The Anti-Tuberculosis Society, Philadelphia Botanical Club, and 

 Delaware Valley Ornithological Club have held their meetings in the 

 Academy during the year. The collections have been consulted by 

 many visiting scientists and specimens have been loaned to Robert 

 Ridgway, H. W. Henshaw, H. L Smith. C. Hart Merriam, D. G. Elliot, 

 M. W. Lyon, H. F. Osborn, E. B. Williamson, Frank Stephens, G. W. 

 Clapp, A. N. Caudell, O. P. Hay, O. A. Peterson, G. S. Miller, Jr., F. 

 C. Baker, Lawrence Bruner, Earl Douglass, and E. W. Nelson. 



Samuel G. Dixon, 



Curator. 



Report of the Special Curator of the Department of Mollusca. 



Early in the year the entire collection of mollusks was removed from 

 the upper gallery, and has remained packed up during the construction 



