Hewitson’s British Oology. 381 
and not the nervus vagus of the higher classes. The details, which are 
of great interest to the entomological anatomist, must be sought in the 
paper and its accompanying plates. 
In the single Helminthological paper, “ Filarie et Monostomi 
** speciem novam in Balena rostrata repertam deseribit Dr. F. C. H. 
** Creplin.”” Of these two new species of internal parasites, the former, 
named by the authour Filaria erassicauda, was found in considerable 
numbers in the corpora cavernosa penis of the species of Whale indicated, 
and partially dependent into the cavity of the urethra, It appears to be 
the first entozoon discovered in such a situation in any animal. The 
other, Monostomum plicatum, Crepl., occurred on the inner surface of 
the small intestines, and of the esophagus; it was also rather abundant. 
The last paper in the present volume which, as zoologists, we have 
occasion to notice, gives the result of some “* Untersuchungen tiber den 
‘* Bau einiger Polypen des Mittellandischen Meeres,”’ by M. W. Rapp. 
The Polypi on which the observations in question were made were the 
Veretillum Cynomorium, Cuv., and Tubularia solitaria, Rapp, a species 
which the authour believes to be new. Much interesting information 
with regard to the habits of these singular creatures, and some new views © 
with respect to portions of their anatomical structure, give value to this 
contribution. Both species are figured, and the large size of the aggre- 
gated polypes in the one case, and of the solitary individual in the other, 
affords an excellent opportunity for observing both their conformation and 
mode of life. They were observed by the authour on the coast of 
Languedoc. 
British Oology, being Illustrations of the Eggs of British 
Birds, with figures of each species. By W. C. Hewrrson 
of Newcastle. 1831. Nos. 1. to 6. 
Part of a very interesting, but hitherto much neglected, branch of 
Nature’s productions is here illustrated ina manner highly creditable to 
the talents of the authour, who combines in himself the rare advantages 
of being an excellent artist as well as an ornithologist. Six numbers 
