Quaiierly Jouiiial oj Coiichology. 337 



NOTES ON THE GENUS PARTULA. 

 By C. P. Gloyne. 



Having in my collection a rather considerable number of 

 species of Paitiila, received principally from Mr. Bland, of New 

 York (including typical examples of many of Pease's species), and 

 from the Museum Godeffroy, I have thought it desirable to 

 examine them with a view to ascertain which cf the so-called 

 species ouglit to be allowed to stand, and which of them are, on 

 the other hand, only synonyms or varieties. I suspected that 

 many would be in the latter category, Pease having described new 

 species in great profusion, so that, including those of which he 

 had not seen the descriptions, Dr. Pfeiffer (whose loss all concho- 

 logists must deeply regret) enumerates about 140 different species 

 in the last volume of his monograph. 



As will be seen below, this expectation has been justified, 

 and probably I might have been able still further to reduce the 

 number if, instead of rarely possessing more than three specimens 

 of each so-called species, and often only one or two, I had had 

 extensive suites at my disposal so as to show transitions. 



The following are my remarks : Partula sinistrorsa.. Pse., is 

 synonym of P. ai/ialnlis, Pfr., which latter hardly differs from 

 ritbescens, Rv., except in color. 



P. crassa, Pse., is very near but has a denticle. 



These species form a natural group with P. otaJieitana. 



P. aticniiata, Pse., 187 1 (Mus. Godeffroy) =■ P. gracilis, Pse., 

 1866. 



P. alternata, Pse., is synonym oi P. vexillit?ti, Pse.; the only 

 difference is in the markings, which are very variable. 



May, 1878. 



