162 PROCEKDINGS OK THE GEOLOGICAL SOCIETY. 



Rosser s series of Eutomostraca from Woolwich appear to agree with 

 the figures and description of Dr. Reuss's Cijpndina * Kostelensis, 

 described in his memoir on the Entomostraca of the Austrian Ter- 

 tiaries, and found in the Leithakalk of MoraA ia and Austria, in the 

 salt-rock of Galicia, &c. 



5. Cythere (CYTHEREisf) PLiCATA, Miinster. Bosquet, o/j. c«Y. 



p. 60. pi. 2. fig. 13 a-d. Pl. III. fig. H. 



This species I found to occur not unfrequently in some clay with 

 fragments of oyster-shells from Woolwich. 



C. pUeata has been found in the Miocene of Dax ; in the Eocene 

 of France, Belgium, North-east Germany, Bohemia, Austria, and 

 Moravia. I have met with it in abundance in the white tertiaiy sands 

 of Colwell Bay ; also in the Barton Clay. 



6. Cythere (Cythereis) angulatopora, Reuss, sp. Bosquet, 



op. cit. p. 68. pl. 3. fig. 5 a-d. Pl. III. fig. 12. 



Two broken valves of this beautiful species occurred in the clay 

 with fragments of oyster-shells from Woolwich which supplied me 

 with C. Wetherellii, C. plicata, &c. 



C. angulatopora occurs in the Eocene beds of Belgium (Ghent) 

 and of France. 



7. Candona:}; Richardsoni, Jones. Pl. III. fig. 13. 



Valves smooth, thin, oblong ; rounded at the extremities, depressed 

 towards the anterior extremity, most convex just posteriorly to the 

 centre ; ventral border straight ; dorsal border gently curved. This 

 species approaches in shape to the recent Candona reptans : in size 

 it is much inferior. It also closely resembles a species found in the 

 Upper Eocene of the Isle of Wight. 



C. Richardsoni was found by Mr. Baily, in the thin baud with 

 Hydrobia, Planorbis, and Cyrena in the Woolwich pit. The indivi- 

 duals arc numerous, compressed between the lamina? of the clay. 

 The specimens which we have been kindly permitted to use in figuring 

 and describing this little fossil are now in the Museum of the Geo- 

 logical Survey, Jermyn Street. 



Casts of a species perhaps identical with C. Richardsoni have been 

 found by the Rev. Mr. De la Condamine in the Planorbis-bed at 

 Counter Hill. 



This species has been named after j\Ir. W. Richardson, F.G.S., 

 to whom geologists and palaeontologists are much indebted for facts 

 and fossils from the Tertiary deposits. 



* A generic term wrongly applied by this palaeontologist in the memoir referred 

 to and elsevrhere. 



t Cythereis (Jones) is a subgenus of Cythere (Muller). 



X Candona [Eaird) is another genus of the small bivalved Crustaceans, and is 

 closely allied to the common Cypris. Like the latter genus, it is often found 

 abundantly in fresh water. 



