214 
Dr. Maton's and Mr. Rackett's 
Turbo, and arranging all the depressed species of the former with- 
out regard to the shape of the aperture. A new genus (Vermiculum) 
is introduced for the purpose of containing such of the Serpula as 
do not agree with the generic character of being fixed to other 
bodies. The whole of the work is in the English language ; so 
that the author cannot be said to have employed the Linnean 
terminology (strictly so called) or the Linnean mode of descrip- 
tion ; but this is a circumstance which will not be regretted by 
ordinary readers. 
N. B. In the following Systematical enumeration of Tcstaceological writers, and of 
their works, the numbers annexed to the names of the former refer to the pages in the 
preceding account wherein these writers are respectively mentioned. 
SYLLABUS 
