58 
room vin. swallow; the nest of the tailor-bird, &c. On the 
Nat. Hist, lowermost shelf is deposited the supposed leg of the 
Dodo, &c. 
The table in the right-hand window commences 
■» 
the arrangement of the hard parts of the class Mol- 
lusca. 
The first division contains the bones of the Cepha¬ 
lopoda or Cuttles, amongst which that of theSpirula 
or pearly Nautilus is one of the most interesting. 
The second division contains ; 1 st, The shells of 
the class Pteropoda, whose animals resemble the 
naked genus Clio ; such as Kyale, and the newly 
discovered genus Pontica. 2dly, The shells of such 
of the class Gasteropoda as have no external oper¬ 
culum, and whose animals have four tentacula or 
feelers. This division occupies the remainder of this 
table. Internal shell of Limax or Slug; shell of 
Testacella; whose animal bears the shell at the ex¬ 
tremity of its body; Suecinea and Vitrina, wdiose 
animals retire within the shell completely, only 
during the winter season ; Tomigeres or Grinner, 
whose aperture is turned upwards ; that extremely 
rare shell, the Polydontes; the turrited variety of the 
Tachaea nemoralis ; various varieties of the genus 
Pomatia; and at the end several species of Clausilia, 
a genus which is constantly reversed, whose ani¬ 
mal possesses an internal operculum, or lid. 
Tables 14 to 21 contain a continuation of the 
Gasteropodous Mollusca, which are now' under ar¬ 
rangement ; 
