M. Agassiz on Shells from the Crag, 



343 



XXXIX. — Additions to Mr. Wooers Catalogue of Crag Ra- 

 diaria*. By M. Agassiz. 



To the Editors of the Annals and Magazine of Natural History. 



Gentlemen, 



Mons. Agassiz a few hours previous to his departure for the 

 continent paid me a very short visit, and was able to deter- 

 mine among my crag Radiaria the following genera, which I 

 am desirous should be made known (having his permission), 

 as there are some among them that w r ould scarcely be looked 

 for in that deposit. The list comprises all that M. Agassiz 

 had seen from the crag during his sojourn in this country. 



Yours, &c. 



S.V.Wood, 



December 8, 1840. 



DESCRIPTION. 



Coralline Crag. 



Red Crag. 



Genera. 



Pentacrinus.... 



Comatula 



Comatula 



Asterias 



Echinus 



Echinopsis .... 

 Echinopsis .... 

 Echinopsis .... 

 Temnopleurus 

 Temnopleurus 

 Temnopleurus 



Arbacea 



Salenia 



Fibularia .... 



Fibularia 



Fibularia 



Fibularia 



Fibularia 



Brissus 



Amphidetus 

 Spatangus .... 



Sutton. 



Sutton. 



Sutton. 



Iken. 



Sutton. 



Ramsholt. 



Ramsholt. 

 Ramsholt. 



Ramsholt. 



Sutton. 



Ramsholt. 



Sutton. 



Sutton. 



Near Orford. 



Sutton 



Ramsholt. 



Sutton. 



Sutton. 

 Sutton. 



Alderton. 

 Sutton. 



Sutton. 



* See above, p. 245. 



