84 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Turbo imbricatus, and T. exoletus or cinctus. Of the plates at the 

 end the first has been re-drawn, the second to fourth are the same 

 as in the first edition but differ in the coloration, whilst the fifth 

 and sixth are new. 



Then there is a " Third Edition, with considerable Additions and 

 Alterations ", dated on the title-page 1825. 



The contents and glossary run to only thirteen pages ; there is 

 no advertisement ; the classification appears as chapter iii of the 

 introduction, and this and the text proper occupies 140 pages only. 

 The frontispiece is the same as in the preceding, and so are the other 

 six plates, although the first plate has been modified and the coloring 

 of many shells differs appreciably. 



In 1827 was published " A New Edition, with considerable 

 Additions and Alterations", the only alteration I have noted being 

 a new frontispiece with five figures, Valuta lyrica, Valuta zebra (two 

 varieties), Conus zebra, and Conus coccineus, the text and other 

 plates being the same. 



I also have the " Fourth Edition, with considerable Additions 

 and Alterations ", dated 1832, which has an " Advertisement to the 

 Fourth Edition ". This, with the title-page, blank pages, etc., and 

 two pages of contents, occupies pp. i-xii. Then the glossary, 

 introduction, and text proper are continuously paged from 1-149, 

 and the six plates at the end are the same as in the preceding edition. 

 There is an entirely new frontispiece, showing three figures only, of 

 Murex foliatus, Murex regius, and Murex radix. These figures are 

 very fine and appear to be the work of a Sowerby, but are not signed, 

 but the plate is lettered : " Published by J. Tennant, late S. Mawe, 

 149, Strand." 



There also seems to be a fourth edition, dated 1831, which may 

 be the same as this or may be different. 



Lamarck's " Hist. Anim. s. Verteb." 

 The above abbreviation is about the best known in malacological 

 literature, so that a note on the " Troisieme Edition ", hitherto 

 unrecorded, seems of sufficient importance for publication. 



The first and second editions constitute the basis of recent 

 conchological work and are well known, the first in seven volumes 

 dating from 1815 to 1822, the second by Deshayes and Milne- 

 Edwards dates from 1835 to 1845. Both are published in Paris 

 and are in small octavo. 



I have acquired a " Troisieme Edition, revue et augmentee de 

 notes presentant les faits nouveaux dont la science s'est enrichie 

 jusqu'a ce jour ; par MM. G. P. Deshayes et H. Milne Edwards ", 

 published at " Bruxelles. Meline, Cans et Compagnie ". It is in 

 three volumes, large octavo in double column, and bears dates 

 1837, 1839, 1839. The authorship suggests this may be simply 

 a reprint of the well-known second edition, but the dates appeared 



