136 Revinvs — The Palceontographical Society of London. 



1. The Crag Foraminifera, Part I, was commenced in 1865 by 

 Prof. T. Rupert Jones, F.R.S., assisted by W. K. Parker and H. B. 

 Brady (pp. 1-72). One page (p. 73), which completes this part, 

 was issued in 1895 with Part 11. The second part was begun in 

 1895, with five new assistant authors, as stated above — the two early 

 colleagues who shared in the labour of Part I having in the inter- 

 vening thirty years both passed away, leaving Professor Eupert 

 Jones to seek new assistants. These he has fortunately found 

 in increasing numbers, so that the work might now be known as 

 tlie "hexade" or the '' hexameron" ; and if each of the six authors 

 contributes his quota, the work should proceed " merrily as a marriage 

 peal." 



Plates i-iv appeared with the text to Part I in the 1865 volume, 

 and plates v-vii with the text to Part II in 1895, so that the state- 

 ment on p. X in Part III, 1896 — " list of genera and species described 

 and figured in Part III " — is hardly correct, seeing that no plates 

 accompany Part III. 



We venture to urge upon authors the desirability of making parts 

 of monographs complete in themselves, especially when, as so often 

 must happen, there comes a hiatus of years between the issue of 

 parts of a monograph. 



In Parts II and III of this monograph on the Crag Foraminifera, 

 the authors give not only careful descriptions of a large number of 

 species, biit Mr. Burrows has added an interesting chapter " On the 

 Stratigraphy of the Crag, and notes on the Distribution of the Fora- 

 minifera," which must prove of great value to geologists. The 

 synonymy has been dealt with by Mr. Sherborn, and we see the 

 terrible consequences arising from the want of his " Nomenclator 

 Zoologicus et Palceontologicus " to refer to at any moment, in the long 

 lists of synonyms which fill pages of text in such forms as Truncatn- 

 linn lobatula, T. variabilis, T. Haidinyeri, and T. Ungeriana ; or in 

 Globigerina bidloides, Planorbuliyia Mediterranensis, Polymorphina 

 communis, Textilnria sagittula, T. agghitinans, etc. Every paiseon- 

 tologist must feel grateful to the authors for their excellent work, 

 leading the way to a better knowledge of the forms of these 

 micro-organisms of our English Crag. 



2. The British Jurassic Gasteropoda, by Wilfrid H. Hudleston, M.A., 

 F.R.S., etc. The completion of this task, which has occupied ten 

 years in its publication, to say nothing of previous study, must he 

 a source of satisfaction to the author as well as to palseontolugists, 

 field-geologists, and collectors of fossils. 



That the Gasteropoda of one formation, the Inferior Oolite, should 

 occupy a volume comprising nine parts, 44 plates, and 514 pages, 

 is a sufiicient evidence of the growth of palseontological knowledge. 

 Morris, in the second edition of his famous Catalogue, recorded sixty 

 species ; the present census enumerates 398 species and 40 varieties 

 Irom the Inferior Oolite. 



In these days of excessive species-making and of the consequent 

 obliteration of old landmarks, it is satisfactory to find that the 

 author adopts a plan of judicious moderation both as regarda species 



