1 8 REVIEWS. 



its able compiler may, with great propriety, plead the almost infant state 

 of our knowledge of the Cheilostomata, and the abundant and accurate 

 lists of synonyms which he has in every case appended ; the other is the 

 price at which they are published. This we would not, perhaps, dispute 

 if they appeared as publications emanating either from the pen of Mr. 

 Busk or any other similar source; but when they are ushered into 

 existence with the pompous announcement that they are printed by order 

 of the Trustees of the British Museum, we would have hoped that the 

 price of the Catalogue might be such, that, when completed, even the 

 poorest student could have been in possession of it as a welcome addition 

 to his previously scanty store. 



We, however, will look with impatience for the future parts, and hope 

 that these two, comprehending so many puzzling genera, will be succeeded 

 by others in which the same care and accuracy of description will be main- 

 tained, and that then- talented author will be spared to see them valued, as, 

 sooner or later, they must be by all who are capable of duly appreciating 

 the laborious research which every page bears evidence of. 



We also regret, that in the conclusion of Part II. a Concordance of 

 Synonyms, similar to that appended to other lists published by the British 

 Museum, was not attached. We hope, however, to find it with the last 

 part, as we can speak from experience of the great facilities it affords the 

 student, who, perhaps, is only acquainted with the nomenclature of some 

 British Monograph ; and this is the more necessary, as in some genera of 

 the Cheilostomata the specific distinctions are often so trivial as even to 

 puzzle a practised observer to recognise them with certainty. 



Of the illustrations of every species catalogued we cannot speak too 

 highly ; they far surpass anything of the kind we have yet seen for rigid 

 accuracy and fidelity of execution, and will be prized by all whose good 

 fortune it may be to possess so valuable and welcome an aid as " Busk's 

 Catalogue of British Marine Polyzoa." 



A MONOGRAPH OF THE SUB-CLASS CIRRIPEDIA. With figures of all the 

 species. By Charles Dai-win, F.R.S., F.G.S. Volume I. 8vo. The 

 Lepadida3. London : Printed for the Ray Society. 1853. With 10 

 Plates. Volume II. 8vo. The Balanida3, The Verrucidae, &c., &c. 

 London : Printed for the Ray Society. 1854. With 30 Plates. 



UNTIL comparatively recent years, the Lepadid* and Balanidas commonly 

 known by the names of " barnacle," and " acorn shells" were supposed to 



