Revision of the Nomenclature of the Brachyura. 163 



adopted for preparing an ' Index Generu.ni et Specierum Ani- 

 malium,' " * says, p. 612 : " The figure depicted on a plate may or 

 may not be the drawing intended by the author ; it is the work 

 of the artist, who is also responsible for the descriptive legend. 

 In numerous instances the descriptive legend on a plate is quite 

 erroneous, and has been repudiated by the author in his text. 

 Until the text descriptive of a plate appears, the names on the 

 plate must be considered as nomina nuda, and it is open to any 

 one to describe and rename such nomina nuda" 



Is this rule intended to cover cases similar to Dorynchus, based 

 on a text figure, and Planes, based on a plate figure, the name of 

 which appears in the text without adequate description? 



7. Post-Linnsean name given by a polynomialist invalid. In 1763 

 Vosmaer in Memoires de Mathematique et Physique, volume IV, 

 established the genus Notogastropus for a crab noted and named 

 for having feet on its dorsal as well as its ventral side. While 

 this form was described and figured, no specific name was attached 

 to it. It is without doubt referable to Dorippe dorsipes (Linnaeus) 

 1758 = D. quadridens Fabricius, 1798. The name Notogastropus 

 was never adopted, though it appears in synonymy in Desmarest 

 and de Haan, for the reason probably that Vosmaer was not a 

 binomialist, and for the same reason I have not disturbed the 

 current name Dorippe, preferring to follow Rule 44 b of the Rules 

 of Nomenclature adopted by the International Zoological Con 

 gress held in Paris, 1889, which says : " Le nom attribue a chaque 

 genre et a chaque espece ne peut 6tre que celui sous lequel ils 

 out ete le plus anciennement designes, a la condition : 6. Que 

 1'auteur ait effectivement entendu appliquer les regies de la 

 nomenclature binaire." 



8. Preoccupied names. The following new generic names are 

 proposed for names preoccupied in the same kingdom : 



Pdeduma f for Amorphopus Bell, 1858. (Amorphopus Schqnherr, 

 ' in litt.,' Gen. Cure., V, ii, 577, 1840, given as a synonym of Calo- 

 dromus; also Serville, Hist. Nat. des Insectes Orthopteres, Paris, 

 1839, teste Agassiz.) 



jEpinus% for Apocremnus A. Milne Edwards, 1878. (Apocrem- 

 nus Fieber, Wien Ent. Monschr., II, 320, 1858, Hemiptera.) 



*Proc. Zool. Soc. London, June 2, 1896, pp. 610-614. 



'j.a, a rudiment, in allusion to the fifth pair of legs. 

 ?, steep. 



