MUSEUM OF COMPARATIVE ZOOLOGY. 31 



REPORT ON THE MYRIOPODS AND ARACHNIDS. 



By Ralph V. Chamberlin. 



During the year accessions of chilopods and diplopods, by gift 

 or in return for identifications, were received from Miss E. B. 

 Bryant, Profs. C. T. Brues, T. D. A. Cockerell, C. R. Crosby, 

 C. A. Kofoid, W. M. Wheeler, Dr. W. M. Mann and Messrs. C. F. 

 Baker, Nathan Banks, H. S. Barber, H. E. Denno, J. H. Emerton, 

 E. H. Hardy, F. M. Webster, and the U. S. Department of 

 Agriculture. 



Additions to the collection of arachnids have been made by 

 donations from Miss E. B. Bryant, Profs. C. T. Brues, Harold 

 Heath, W. M. Wheeler, Mr. J. H. Emerton, who has presented 

 additional types, and Mr. S. C. Chamberlin. 



My time has been given largely to the arachnids. The collec- 

 tion of Aviculariidae was identified, labeled, and catalogued and 

 a paper prepared embodying the description and illustration of 

 the new forms. The collection of arachnids made by the Yale 

 Peruvian Expedition of 1911 and presented to the Museum by 

 Prof. H. W. Foote was also studied, labeled, and catalogued and 

 a report embodying results completed. Routine work included 

 the examination of numerous specimens of chilopods, diplopods, 

 and arachnids sent in for identification. A beginning was made of 

 a card catalogue of the chilopods. 



