4 U.S. NATIONAL MUSEUM BULLETIN 262 



Type specimens are loaned for 2-week periods and sent by registered 

 mail. People with requests for large loans of types are urged to come to 

 the museum to study them. If a visit is not feasible, types are mailed in 

 smaller lots; each lot is sent out upon return of the last one. Although 

 the division has not had a loss using registered mail in recent years, it 

 is better to risk just a few types in any one mailing. Silicified or other 

 fragile specimens are not loaned because of the probability of breakage. 

 Types from the Springer Echinoderm collection cannot be loaned out be- 

 cause of the terms of the bequest. 



DEPOSIT OF TYPE SPECIMENS.-It is Smithsonian policy to accept 

 all types sent in for permanent deposit by authors working outside the 

 Institution. This is done regularly by taxonomists who do not have a 

 stable repository convenient to them. It is recommended that those authors 

 who plan to deposit types at the Smithsonian Institution write to the 

 Division of Invertebrate Paleontology, U.S. National Museum, Washing- 

 ton, D.C. 20560, to ask for a block of catalog numbers, one for each in- 

 dividually designated specimen and paratype of hypotype suite. These 

 numbers will be reserved and will be sent immediately to the author so 

 that they can be included in the manuscript and published. Numbered 

 specimens should be deposited by the time of publication. It is the re- 

 sponsibility of the author to prepare specimens for permanent storage and 

 to identify specimens with their assigned catalog numbers. Specimens 

 sent in before publication will not be available for examination by any- 

 one without the author's permission until published. At that time, the 

 technical staff of the museum will catalog, label, and place the speci- 

 mens in the collections. 



September 15, 1966 



