198 Dr. Maton's and Mr. Rackett's 
work, however, did not comprehend any of the Vermes, and it 
was not until the year 1778 that a 4th volume made its appear- 
ance, with descriptions and figures of that tribe. This volume 
contains an enumeration of 16'3 species of Testacea, with concise 
descriptions, and 56 plates exhibiting about 200 figures of them. 
Most of these plates are valuable for reference, but some of them 
are executed less carefully than could have been wished. In the 
descriptive part the author has translated pretty closely the spe- 
cific characters given by Linnaeus, whenever they could be had ; 
but there are several species of which the former is to be looked 
upon as the first describer. It is very remarkable, however, that 
he should have wholly omitted others which had been noticed by 
Lister and Petiver, and which are unquestionably natives of our 
island. 
In the Nova Act. Reg. Soc. Scient. Upsal. we find a description 
of Anomia Caput Serpentis by this author, with a figure subjoined. 
It may be remarked that the same shell is described in the same 
volume by the pen of Linnaeus, whose figure (with those of Ano- 
mia patellceformis, noticed in the same paper,) occurs in the plate 
that contains Pennant's. 
We have next to mention the Introductio ad Historiam Natu- 
ralem, and the Delicice Fauna et Three, Insubricte, of the learned 
SCOPOLI, 
both of which are the productions of great science, aided by ge- 
nuine ardour of investigation. Scopoli was well acquainted with 
the labours of his predecessors in Testaceolog3 r , as well as in other 
branches of natural history, and has availed himself of them to- 
wards perfecting the system of Linnaeus, whose genera he has 
considerably augmented, — more so, perhaps, than is consistent 
with the general simplicity and facility of application of the ori- 
ginal. 
