On Bulinus Hemastoma. 495 
do they altogether agree, although they approach most nearly to 
Kerodon. 
I may add that the Dendrobius Degus of Dr. Meyen, described and 
figured in the same Paper, is my Octodon Cumingjii, the characters of 
which were laid before the Committee of Science and Correspondence of 
the Zoological Society in March 1832, and shortly afterwards pub- 
lished in its ‘ Proceedings,” part 2, p. 46, & seqq. Mbolina’s 
description of his Sciwrus Degus differed so greatly from the animals 
from which mine was taken, and which are still (September, 1834) 
living in the Society’s Gardens, that I hesitated to quote that name as a 
synonym; and [ am not quite sure whether Dr. Meyen states of his own 
knowledge, or on Molina’s authority, that his animal is called Degus 
by the natives of Chili. If the former, the synonym can be of course 
no longer doubtful. 
Art. LXVI. Scientific Notices. 
Note relative to Bulinus hemastomus, p. 101 of this 5th vol. 
The occurrence of an egg of Bulinus ovalis, brought from Rio de 
Janeiro by my friend Thomas Miller, Esq. R. N., which I showed to 
Mr. Broderip as a novelty, led him to suggest to me that the eggs men- 
tioned at p. 101 of this volume were laid by that species, which, however, 
is there called Bulinus hemastomus. There can be no doubt of the specific 
identity of the two individuals, and I know not how to account for the 
mistake in nomenclature thus detected. Certain it is that the Bul. 
hamastomus bas never been brought to Europe from Rio, nor has Bul. 
ovalis ever reached England from any other Country. The representa- 
