88 AMERICAN JOURNAL 



name and authority with each new genus into which it may be 

 thrust ? If so, in a very little while no man would be found bold 

 enough to enter into a study in which, even now, the synonymy 

 is almost interminable. 



II.— FOREIGN. 



BRITISH. 



Annals and Magazine of Natural History. Third Series, Vol. 17. 

 8vo., London, 1866. 



No. 97. January. 



On the Terrestrial and Fluviatile Mollusca of Trinidad. 

 By R. J. Lechmere Guppy. 



Ampidlaria ureeus, Miill., yar. purpuraseens, Guppy, formerly 

 described as a distinct species, (Ann. and Mag., xiv. p. 243.) 



Helicina nemoraUs is proposed instead of H. zonata, Guppy, 

 described at same time and preoccupied.* 



Helicina barbata, Guppy, is possibly only a variety of IT. Dy- 

 soni, Pfr. 



Bulimus multifasciatus, Lam., nov. var. imperfectus. 

 " aureolus, nov. spec. 



Plekocheihfs auris-seiuri, nov. spec. 



Simpulopsis eorrugatits, " " 



Conuhis {Helix) vacans, " " 



Anodon Leolandi, " " 



Air the other species inhabiting the island are enumerated, 

 with remarks. The curious feature of this paper is the record of 

 the discovery of a new species of Unionidse in the West Indies. 



No. 98. February. 



Ooncliological Gleanings. By Dr. E, Von Martens. 



I, On the subdivisions of the genus Pinna. 



No. 99. March. 



Conchological Gleanings. By Dr. E. Von Martens.. 



II. On some species of Assiminea. 

 Assiminea pinguis, Makao. 



" miniata, Singapore. 

 Omphalotropis maeidata, Martens, is said to be a synonym 

 of Assiminea carinata, Lea. 



* Mr. Bland suggests to mc that it is probably the same as H' 

 McMurrayt, Pfr., Mai. Blatt., 1862, p. 155 ; and Novitates Conchol., pi" 

 64, figs, 15-16. 



