M. 0. A. L. Morch on Conchological Nomenclature. 137 



genera only, and all bivalves into one Class (Concha), we must 

 regard Klein's as a classical work. Many of his genera were not 

 inferior to those now in use ; and those in which there exists the 

 greatest intermixture of species are certainly not worse than the 

 Linnsean, which are now generally adopted : for instance, Bulla 

 of Linnaeus includes Ovula and Physa ; Turbo includes Clausilia; 

 Littorina, Turb. marmoreus ; and Nautilus, Planorbis and Fora- 

 minifera. In the republic of science all are equal, and have the 

 same claims upon the justice of posterity. As conchologists, 

 Klein and Fischer were perhaps superior to Linnseus, although 

 in their nomenclature they were inferior to him ; and with re- 

 gard to Klein, we possess this advantage, — that in most cases 

 there can be no doubt as to the type, of which a figure is always 

 given. Shuttleworth, for instance, will not adopt the genus 

 Pseudotrochus (a name as good as Pseudachatina, Albers) because, 

 in addition to the figured type (Bulla virginea, Linn.), it includes 

 Cerithium telescopium, although these forms do not differ more 

 than the species in the genus Helix, Linn., adopted by the same 

 author. The genus Chersina, Humphrey, is preferred to Liguus, 

 Montfort, although the former is composed of the heterogeneous 

 species, Bulla virginea, Bulla achatina, Linn., and a Tornatella. 

 It must be a matter of indifference how much the species referred 

 to a genus differ from the type, if they are not congeneric 

 with it. 



I will now offer a few observations on the assumed errors 

 indicated by the reviewer. 



Nerita, Klein, cannot be used, because Lister's name adopted 

 by Linnaeus, but more accurately defined than by the original 

 author, has priority. 



Garagoi, a name as good as Muscari, Tournef., or Gari, Schu- 

 macher, is a generic name borrowed from Buonanni, who used 

 it as a vernacular name for Spaniard. It is very likely a mis- 

 spelling of Caracol. I am not able to identify the figure ; per- 

 haps it is Littorina ziczac. 



Cophinosalpinx (compounded from Ko<pivos } corbis, and craA,- 

 7rfcYf, tuba) does not contain any Pleurotoma,h\\t aMangelia, seve- 

 ral Nassce, and Phos senticosus ; but* B the type belongs to Ricinula ! 



Buccinum, Klein, is the name of a Class, and not of a genus. 

 Buccinum, Browne, is Triton, Montfort. 



Saccus, Klein, is Turbo of Cuvier, which contains many dif- 

 ferent species. The type selected for illustration is Turbo ma?-' 

 moreus. 



Ficus, Klein (1752), Bolten, Humphrey, Rousseau, is pre- 

 occupied by Linnseus for a plant. Gray has introduced Browne's 

 name Sycotypus, but, I believe now, erroneously, because Browne 

 mentions a hairy epidermis, which is not found in any species 

 of that genus. Perhaps it may be a young Triton. It is also 



