302 REPORT — 1892. 



contains Lonsdale's types, besides which there are selections from tha 

 cabinets of Mr. Woodward (Norfolk Polyzoa), Dr. Bowerbank, and 

 others. There is also a good collection in the Museum of Practical 

 Geology, Jermyn Street, derived from several British localities. 



In the ' Paleontologie Fran9aise : Terrains Cretaces,' vol. v., 1850-52, 

 d'Orbigny gives the sum-total of the Senonian Bryozoa of France as 

 follows (p. 1082) :— 



Bryozoaires Centrifugines (Cyclosfomatai'), genera 115 ; species 300. 

 ,, Cellulines ((7/iei7osio?)ia/a .''), genera 54; species 547. 



In Dr. Friedrich von Hagenow's ' Die Bryozoen der Maestrichter 

 Kreidebildung,' published in 1851, about 180 species are described and illus- 

 trated as derived from the Maestricht Chalk. In this work Dr. Hagenow 

 re-describes the whole of Dr. Goldfuss' Cretaceous Bryozoa, and breaks 

 up the limited classification of the group as given iu ' Petrifacten,' and 

 redistributes the restricted genera adopted by Goldfuss in that work. 



Previous to the publication of these two leading palseontological works, 

 which deal with the Bryozoa in detail, there were others of less note, but 

 all the Cretaceous species which had been described or catalogued before 

 1850 and 1852 are fully recorded by d'Orbigny in the introductory notes 

 which preface the specific descriptions in vol. v. of the ' Paleontologie 

 Fran^aise.' 



In 1886 Dr. Ed. Pei'gens and A. Meunier published their joint paper, 

 'La Faune des Bryozoaires Garumniens de Faxe,' > in which nearly 60 

 species of Bryozoa are recorded from this horizon, and eight of these are 

 either new species or new varieties. Some years since Professor J. Judd 

 made me a present of a large block of the Faxoe Limestone which he 

 brought with him from Denmark, and by carefully breaking up the mass 

 and then washing the finer debris I was able to pick out a quantity of 

 these delicate fossils. I have therefore been able to verily most of the 

 forms described by the authors, and I find" that at least five or six 

 other species, not given by Dr. Pergens, may be added to the Faxoe list. 



This little monograph, then, is extremely valuable to the student of 

 Upper-Cretaceous Polyzoa on account of the very wide range, from 

 Neocomian to Recent, which the authors assign to the species indicated 

 by them. No doubt the range of variation in many of our so-called 

 species is only partially considered ; hence the desire on the part of some 

 of our Continental palaeontologists to reduce to mere synonymy a large 

 number of the generic and specific names of authors, and of d'Orbigny in 

 pai-ticular. Whether palaBontological research will be retarded or helped 

 by the wholesale destruction of specific names, remains to be seen. On 

 the other hand, the tendency of certain authors to increase the difficulties 

 of the student by the introduction of new generic terms whenever slight 

 variations of the Polyzoan zoarinm present themselves is much to be de- 

 plored. 



In 1887 Dr. Th. Marsson's valuable monograph was published, ' Die 

 Bryozoen der Weissen Sclireibkreide der Insel Riigen,' '■^ and this work 

 adds considerably to our knowledge of Upper- Cretaceous Polyzoan forms. 

 In his descriptive text the author not only creates new divisional and 

 new family names, but many new genera and species besides. It is very 



' Ann. de la Soc. Royale Malaool. de Bclgique, tome xsi. 

 ^ Druch imd Verlag vo9i Georg Beimer, Berlin, 1887. 



