23 



PLATE 7. 



Euodia (Chimmoenses). O'Meara. 



Fig. 1 shews the natural form under a small power. Fl( , L 



Fig. 2. FIG. 2. 



This form differs in outline and sculpture from those described by Fiu. 2 A. 

 Ralfs, in " Pritchard." It differs from E. Brightwellii, in Avhich the 

 lower margin is concave. Compared with E. Gibba it is broader, 

 and the outer margin semi-circular. Towards the extremities the 

 dorsal margin bends inwards towards the ventral. Several examples 

 all presented the same outline. 



The sculpture of the valve is punctate, and the puncta very dense, 

 and, towards either extremity, arranged in parallel lines across the 

 valve. No appearance of a nodule in the ventral margin. 



Different views of the Euodia. F IGS . i to 4. 



