702 PROCEEDINGS OF THE ACADEMY OF [DeC, 



school classes accompanied by teachers. Out-of-town schools have 

 visited the museum in a body, while Philadelphia schools, notably 

 the High School for Girls, have sent the scholars in sections for the 

 study of special departments in regular sequence. 



The classes from the School of Industrial Art have also attended 

 regularly for the purpose of sketching the osteological and other 

 exhibits. 



Extensive use has been made of the study collections in all depart- 

 ments by visiting specialists, while specimens have been loaned to 

 Robert Ridgway, W. W. Cooke, W. G. Mazyck, M. L. Fernald, 

 H. W. Henshaw, J. H. Ashworth, R. H. Howe, O. P. Hay, R. South- 

 ern, E. W. Nelson, E. S. Shumann, F. M. Chapman, M. J. Rathbun, 

 and H. C. Oberholser. 



A series of mounted mammals of Pennsylvania was contrib- 

 uted to the exhibition of the State Forestry Association. 



Samuel G. Dixon, 



Executive Curator. 



Report of the Department of Mollusca. 



Accessions to the collection of mollusks have been received from 

 66 persons and institutions during the year. 



Valuable material has been collected by several expeditions made 

 by members or friends of the Academy. Mr. J. H. Ferriss spent 

 four months in Arizona, exploring the Santa Catalina and White 

 Mountains, finding an abundant fauna of land mollusks at elevations 

 up to 13,000 feet. As the localities had not been visited before by a 

 collector of shells and the species are largely local, he secured a large 

 number of species new- to science and valuable zoogeographic data. 

 The collections made have been generously shared with the Academy. 



Doctor Amos P. Brown gave the Academy a collection of the 

 mollusca of the island of Antigua, B. W. I., taken by him during the 

 summer. It is probably nearly or quite complete for land forms and 

 includes also a considerable number of marine shells. 



The Special Curator spent a few days over three months in visiting 

 the Hawaiian Islands, chiefly for the purpose of studying land snails 

 of the family Achatinellidm, both in the field and in Hawaiian col- 

 lections. Over 1,000 lots of shells in trays and bottles have been 

 labelled and catalogued, and about an equal number remain to be 

 worked over. Special attention was given to the deposits of fossil 

 land shells, and about 20,000 specimens of fossils were collected. 



