Notices respecting New Books. 221 



ANALYSIS OF PERIODICAL WORKS ON ZOOLOGY AND BOTANY. 



A beautiful work on the Land and Fresh-water Mollusca 

 of Germany, by M. C. Pfeiffer, has just come to our hands. 

 It forms a thin quarto vohime, printed at Cassel ; and is illus- 

 trated by eight plates, containing numerous figures, superior 

 in execution to any thing we have yet seen from the German 

 press. It will be regretted however by the generality of our 

 countrjinen, that the work is in German, excepting the spe- 

 cific characters, which are given in Latin. Much new matter 

 is also introduced regarding the inhabitant animals ; and the 

 figures illustrating this part of the work are truly valuable. We 

 are sorry that our limits will not allow us to notice more than 

 the specific characters of the new species contained in this vo- 

 lixme ; but it includes such a large proportion of subjects found 

 likewise in our own country, that it becomes an almost neces- 

 sary addition to the library of every British conchologist. 



In the arrangement of families, the author has followed the 

 great Cuvier; the genera accord with those of Lamarck, Mliller 

 and Drapanaud ; a new one is, however, proposed under the 

 name of Pisidium, composed of Cj/clas ohliqua Lam. ( Tel- 

 Una amnica Gm.) and Cy. ohtusalis arvd Jontinalis of the same 

 author, principally because they differ from the rest of this 

 group in being inequilateral shells, — a character so trivial, that 

 we are not disposed to concur in the propriety of such a ge- 

 neric distinction. 



The species in this volume which the author considers as new 

 acquisitions, are distinguished by the following characters : — 



Helix depilata. H. testa subglobosa, perforata, subcarinata, 

 cornea, pellucida, substriata, nitidula; apertura semilunari, 

 peristomate submarginato. 



Pupa hi dent at a. V, testa dextrorsa, cylindrico-ovata, obtusa; 

 apertuia bidentata. 



Clausilia bi])licata. CI. testa subventricosa, cornea, striata; 

 apertura pyrifbrme ; columella bilamellata ; plicis interlamel- 

 laribus duabus tribusve. 



Clausilia gracilis. CI. testa fiisiformi, gracili, striatula; co- 

 lumella; JamcUis obsolelis. I'or this species a reference is given 

 to Lister Hist. Conchyl. lib. I. pars i. ft. 59, f. b. 



Clausilia obtusa. CI. testa fusiibrmi, subventricosa, obtusi- 

 uscula, striatii; apertura ovata; peristomate siqierius colu- 

 iriclljc appresso. 



Clausilia minima. CI. testa cyniidrico-fiisiformi, la>viiiscula; 

 opertiira ovata; columella faucil)usque uiiij)licatis. 



Curyrtiium mcnlccanvw. C. testa conico-oblonga, obtusa^ 

 solidg, la;vij nitida; apertura oblique pyrifonui, 5-6-dcntala. 



Val- 



