VOL. XVII, PP. 169-172 DECEMBER 27, 1904 



PROCEEDINGS 



BIOLOGICAL SOCIETY OF WASHINGTON 



SOME CHANGES IN CRUSTACEAN NOMENCLATURE. 

 BY MARY J. RATHBUN. 



There has recently come into my hands, through the kindness 

 of Dr. Charles W. Richmond, a copy of Fridericus Weber's 

 " Nornenclator entomologicus secundum Entomologiam syste- 

 maticam ill. Fabricii adjectis speciehus recens detectis et vari- 

 etatibus, ' ' published in Kiel ( ' ' Chilonii ' ' ) and Hamburg, 1795 . 

 Under the Agonata or Crustacea, pp. 91-96, many of the genera 

 first described in J. C. Fabricius's " Supplementum Entomo- 

 logirc Systematical " 1798, are enumerated, and as they are 

 accompanied by lists of species most of which were previously 

 known, the genera themselves must date from 1795 instead of 

 1798. This has already been brought out by Sherborn in his 

 "Index Animalium," 1902. 



Both Weber and Fabricius had access to a manuscript by 

 Daldorf, who had made largo collections of Crustacea in the 

 Orient and had classified them under a more elaborate system 

 than had yet appeared in print. Daldorf never published his 

 results, and unfortunately his two followers did not make similar 

 use of his manuscript. It follows that the earlier and little 

 known arrangement of Weber must supersede the long accepted 

 one of Fabricius. In the majority of cases the composition of 

 genera is essentially the same by both authors. There are, 

 however, seven notable exceptions : 



34-PROC. BIOL. Soc. WASH. VOL. XVII, 1904. (169) 



