2 U.S. NATIONAL MUSEUM BULLETIN 287 



Shields (1946) and Woodring (1958) have presented helpful biographical 

 and bibliographical information on Dall, but an index to the animals he 

 described has never been compiled. The present work is designed to 

 provide an alphabetical list of all the zoological taxa introduced by Dall, 

 at and below the generic level. The organisms described belong predomi- 

 nantly to the Mollusca, but he also named mammals, tunicates, crusta- 

 ceans, annelids, brachiopods, coelenterates, and sponges. These are 

 treated separately in the catalog. 



Ordinal, familial, and subfamilial names are not listed in this work 

 since the dating of suprageneric taxa is controversial and anything but 

 simple. Initially, we attempted to include suprageneric taxa, but aban- 

 doned including them when it became evident that usually we were unable 

 to fix the earliest date of publication, and very often Dall himself did not 

 indicate that the name was new. 



METHODS. In compiling this list, we have purposely tried to avoid 

 prejudicing the user; that is, we have refrained from offering our opinions 

 or interpretations of any of Dall's taxa. Information that we have supplied 

 is presented, following convention, in brackets, except in cases of obvious 

 nomina nuda where the italicized abbreviation n.n. is used. 



Each entry consists of (1) the new name; (2) the original reference; 



(3) the locality or localities originally cited (where many localities are 

 given usually only the first is listed and the words "and others" appended); 



(4) the museum catalog number or whereabouts of supposed type- 

 specimens. When illustrations or information concerning type-specimens 

 were published by Dall subsequently to the original introduction of a 

 taxon, we have cited these references following the entry. For many of his 

 species, Dall never referred to a type-specimen, and we have made little 

 effort to ascertain this information, nor have we designated lectotypes, 

 preferring to avoid errors of commission. The exacting tasks of the 

 assignation of primary types and the illustration of typical specimens are 

 left to specialists concerned with the taxonomy of each particular group. 



Regarding variations in spelling, we have refrained from making note 

 of errors by using 'sic' to refer to 'as originally printed' and have cited 

 errors or misspellings as they occurred. Only the endings / or // are placed 

 together in the catalog in a nonalphabetical sequence. 



Several sources of error were discovered in attempting to determine 

 whether or not taxa should be credited to Dall. First, in his early papers, 

 Dall often cited himself as the author of a name when he was not the 

 original author at all. Apparently he employed this device to indicate that 

 he was changing a species from one genus to another or using the name in 

 a sense different from that of the original author. Second, he renamed 

 what he considered to be the misidentifications of other authors so that the 

 names would appear to be homonymous. For example, author 'A' would 

 mention and perhaps figure the species B-us c-us Linne. Subsequently Dall 

 would recognize that B-us c-us or author 'A' was not the true B-us c-us of 



