Bedews— Dr. G. J. Einde's Fossil Sponges. 

 The following table is a summary of pp. 223-229 : — 



137 



Formations. 





DIVISION 



I. SILICEOUS 



SPONGES. 





DIVISION II. 



CALCAREOUS 



SPONGES. 



J, 



Monacti- 

 nellida. 



Tetracti- 

 nellida. 



Lithis- 

 tidae. 



Hex 

 neU 



I ti- 

 L.ae. 



Calci- 

 spongise. 



Tertiary or Kainozoic. 

 Pliocene, and 7 



gen. 



I 

 I 



sp. 



{: 



I 



gen. 

 6 



sp. 

 10 



g-en. 



31 

 6 



17 



I 



I 

 9 



sp. 



70 

 8 



32 



I 

 I 



20 



gen. 



29 

 10 

 9 



3 



14 



sp. 



66 

 14 

 13 



3 

 31 



gen. 



5 



9 



9 



16 



sp. 



7 



19 



23 

 44 

 16 



I 



Miocene \ 







2 



3 



Secondary or Mesozoic. 



Maestricht Beds and Upper 

 Chalk 



3 



I 



6 



I 



Lower Chalk, Chalk- marl, 



Chloritic Marl and Upper 

 Greensand (Cenomanien) . 



Gault 



Lower Greensand (Neoco- 











4 



7 



6 



10 



6S 



132 



65 



127 



39 



109 



I 



Primary or Palceozoic. 



2 



I 

 1 



2 



I 

 1 



2 



2 



I 



2 



I 

 2 



2 



I 



5 

 I 

 2 



6 



I 

 10 



3 



I 







I 

 I 





Silurian „ 









4 



4 



2 



2 



3 



3 



11 



21 







2 



Swnmary, 

 Tertiary 



2 



4 



4 



3 



7 

 4 



"6 

 2 



10 

 2 



65 

 3 



132 

 3 



65 

 u 



127 



21 



39 



109 



I 

 2 











10 



14 



8 



12 



68 



13s 



76 



148 



39 



109 



3 



One of the results of the modern and more exact method of 

 classification of the Spongida3 by their structure is to remove a vast 

 number of genera and species very familiar to English geologists, 

 especially to those who have made the Cretaceous rocks their study. 

 The old group of Chonnites of Mantell being composed of a mixture 

 of Lithistid and Hexactinellid forms, has been abolished, as is also 

 the case with BrachioUtes, Cnemidimn, Cupidosporigiti, DiHCOtlia, 

 Mtinon, Scyphia, Spongia, Spongites, Spongus, Tragos, Verrucospongia, 

 and a number of other genera. In the list of genera and species 

 we do not find any notice taken of Spongia paradoxica from the 

 Eed Chalk of Hunstanton (Woodward's Geology of Norfolk, p. Si; 

 Morris's Cat. p. 30). This is (utrncturaUij) perhaps incapable of 

 determination, but it would have been desirable to refer to it, in the 

 index of species. 



A very useful feature of this Monograph is the Bibliography at 

 the end' (p. 231-237). Marshall's name, however, is not given, 



