154 Rathbun Revision of Nomenclature of the Brachyura. 



case should the name [of the genus] be transferred to a group 

 containing none of the species originally included in the genus." 

 The following names have been thus transferred : t/ca, Liipa, 

 Leplopodia, Clorodius, Stenocionops, and Naxia of Leach, Halimus 

 and Platyonichus of Latreille, and Stenorynchus Lamarck. 



Uca was established by Leach in Brewster's Edinburgh Ency 

 clopaedia, volume VII, 1814,* for the Cancer uca or uka Shaw, 

 1802, which he proposed to call Uca una. This is a fiddler crab 

 and not the Cancer Vca \_uca] of Linnaeus, 1767, and the Uca una 

 of the Marcgrave de Liebstad, 1648. Latreille in 1817 (Nouv- 

 Diet. Hist. Nat., XII, 517), rightly considering it a case of mis 

 taken identity, attempted to improve matters by calling Leach's 

 Uca, Gelasimus, and giving the genus Uca to the Linnsean spe 

 cies ; but this proceeding is not sanctioned by the rules of today. 

 Before Leach's Uca was abandoned its existence was recognized 

 by Say in 1817. Uca Latreille may be known as Ucides, nov., 

 and its type species as Ucldes cordatus (Linnaeus, 1763) = Uca 

 una Marcgrave, 1648, which can no longer " be mentioned as a 

 rare instance of one that has been allowed to possess the names 

 by which it was figured and described centuries ago.'' (Stebbing, 

 Hist. Crust., p. 84.) 



In 1814, Edin. Encyc., VII, 390, Leach placed Cancer pelagicus 

 Linnaeus, 1758, in the genus Lupa, and in the same year, in the 



* There has been some doubt as to the date of Leach's article, ' Crus- 

 taceology.' All the volumes of the Edinburgh Encyclopaedia bear the 

 date 1830 on the title page. Desmarest and other writers give the dates 

 1813-1814 for Leach's article. Dr. Stebbing, who has taken pains to col 

 lect evidence on the subject, informs me that volume VII of the Edin 

 burgh Encyclopaedia gives no dates subsequent to 1814, the history of 

 Denmark being carried down to January of that year. (See also Chal 

 lenger Amphipoda, vol. I, p. 85, and quotation of Leach on page 155 of this 

 article.) It has been suggested that the original article appeared in 1813 

 and the Appendix in 1814. I believe, however, that the first two pages 

 of the article were published in 1813 and the remainder, including the 

 Appendix, in 1S14. In the Edinburgh edition of vol. VII, but not in the 

 Philadelphia reprint, the signatures of the first half are marked " vol. VII, 

 part I," and of the second half " vol. VII, part II." Part II begins on 

 page 385, or the third page of Leach's article, and the inference is that 

 Part I appeared in 1813 and Part II in 1814. All descriptions of genera 

 and species appear in Part II of the volume, and in this part of the original 

 article appear many references to the Appendix and Index, indicating that 

 the Appendix, although written later than the body of the article, was not 

 published later. 



