200 Qiiarierly Journal of Cotichology. 



water mollusca, and some serviceable hints on the collection and 

 preparation of shells. 



The descriptive part follows, every species being described — both 

 animal and shell — followed b)^ information as to its station, and its 

 distribution both within and outside of Germany. 



The synonymy is purposely shortened as much as possible, only 

 the citation of the original description, references to some figures, 

 and to any published accounts of the anatomy, with one or two 

 other quotations, being given. Each species is illustrated by a 

 woodcut, giving a view of the shell from above, from below, and 

 sideways. 



The subject ot variation is treated in an original, and by no means 

 bad manner. Differences in size and colour are described, but 

 those of form only are named. 



Almost all the British species are included in the German Fauna, 

 Helix virgata and Plsana\)€\ng perhaps the most striking exceptions, 

 whilst the folloAving German genera and sub-genera are absent in 

 England, Daiidehardla, Triodopsis, Pdasia, Eicloia, Campylaa, Zeb- 

 ri/ia, Choiidrula, Orciila, Pagoduli/ia, Deliina, Fusulus, Graciliaria, 

 Trigonostoma, Slr/gillan'a, Pomatlas, and Lithoglyphus. 



Most of the other genera and sub-genera are represented much 

 more largely in Germany, Xerophila being about the only excep- 

 tion, but at the same tims, with the exception of the species of the 

 Bavarian Alps and of the Danul^e, the general character of the 

 fauna is very similar to the English. 



The land shells are very well treated, and we have no fault to 

 find with the author's appreciation of species. In the freshwater 

 shells, on the other hand, we think he refines too uiuch. It is im- 

 possible for instance to look at the figures of Bythinelia Dunkeri 

 and cylindrica, or of Planofbis coiuplanatus and Clcssini without 

 the strongest doubts as to the distinctness of the species. 



The figures are on the whole fairly drawn, though sometimes 

 rather rough. It is only right however to take into consideration. 



