THE NAUTILUS. 31 



of a beautiful sinistral Amphidromus, which I cannot assign 

 to any of the species fibred in the Manual of Conchology. 

 The habitat is given as "Barbadoes", an impossibility, and 

 the shells figured are stated to be in the cabinet of Mr. For- 

 ster. In the introduction (p. 18) Martyn states that "For 

 exquisite taste and judgment in the various subjects of Con- 

 chology, Mineralogy and every other species of fossil bodies, 

 perhaps no collector has more distinguished himself than Mr. 

 Jacob Forster, to whose constant application in the pursuit 

 of everything rare and beautiful in these branches it is chiefly 

 owing that such matchless specimens now adorn his own, as 

 well as other principal cabinets of Natural History in this 

 kingdom". 



A very large proportion of the shells figured in volumes III 

 and IV are stated to be in Mr. Forster 's collection. His ad- 

 dress is given as "Piazza, Covent Garden". 



There are fifty-two plates in volume IV. 



In addition to the forty plates enumerated in the engraved 

 index, there are twelve additional plates numbered 161 to 172 

 inclusive. It is probable that these plates are part, at least, 

 of those prepared for the fifth volume before the project was 

 abandoned as stated by Chenu (Dall, 1905, p. 420). 



No names are given on any of the plates except No. 169, 

 which has the following legend in ink : 



"Strombus Fusus." 

 "This curious shell was taken up by the anchor of the 

 Albion, East Indianman, in the Straits of Macassar (quere 

 Sunda) in 1794 by Wm. Wells Esq'r and given to Mrs. Rob- 

 son, who sold it and it was afterwards in the possession of 

 Mr. Troward." 



Only a portion of the species represented by these plates 

 are identified in the written index. The following are named : 



Plate 161. Murex neritoideus (Ricinula Lam.). 

 162. M. hippocastaneum " 



165. Cook's Turbo. 

 169. Strombus fusus. 



