196 Dr. Maton's and Mr. Rackett's 
little more than a catalogue, it is adorned with very good figures, 
and many of the species are of considerable rarity. It is wholly 
in the German language. The plates are twelve in number, ex- 
clusive of the four subjoined to an appendix to this work, pub- 
lished at Leipsic under the title of " Nachtrag zu der Conchylien 
im Furstlichen Cabinette zu Rudolstadt" 
The Fauna Groenlandica of 
OTHO FABRICIUS 
deserves a distinguished place among Testaceological works, as 
it contains an ample and satisfactory description of fifty-seven 
species of shells, some of which had not been described by any 
author before. The arrangement is that adopted by Miiller; and, 
like him, Fabricius pays minute attention to the structure and 
habits of the contained animals. 
We are indebted to the celebrated 
PALLAS 
for the description of several new species of Testacea^ in his -Mis- 
cellanea Zoologica, and also in the Spicilegia Zoologica; and he has 
not contented himself with making known non-descript species, 
but has, moreover, rectified the accounts given by preceding au- 
thors of others well known before- Few labourers in the paths of 
natural history have more largely extended every branch of it 
than this truly scientific observer. The Testaceologist will con- 
sult with much satisfaction his remarks on the Serpula, contained 
in the work first mentioned, and called forth by the occasion of 
describing that remarkable species the S. gigantea. He adduces 
many anatomical facts which seem to have been unknown to 
Linnaeus, and which occasion some anomalies in that genus. The 
1 Oth fasciculus of the Spicilegia contains good figures of some rarer 
shells 
