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, " Filar ics et Monostomi 

 " speciem novam in Baloina rostrata repertam describit Dr. F. C. H. 

 " Crepliu." Of these two new species of internal parasites, the former, 

 named by the authour Filaria crassicauda, 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 

 tile small intestines, and of the oesophagus; 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 iiber 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 Tuhularia 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. Hewitson 

 oj' J^ewcastle. 1831. Nos. 1. to 6. 



Part of a very interesting, but hitherto much neglected, branch of 

 Nature's productions is here illustrated in a 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 



