Art. XL — On Some Neiv Species oj Victorian 

 Mollasca, No. 7. 



By G. B. PRITCHARD and J. H, GATLIFF. 



(With Plate XX.). 

 [Eead 14th July, 1904]. 



The present paper includes the descriptions of two hew species 

 which have been obtained ah^ng the coast-line between Rye. Port 

 Phillip, and the Back Beach, Point Nepean. We also give 

 figures of the new species, and for the photography and reproduc- 

 tion of these we have to thank Mi-. D. W. Paterson. The species 

 dealt with are as follows : 



Tellina kenyoniana, sp. nov. 



Cyclopecten nepeanensis, sp. nov. 



Cyclopecten nepeanensis, sp. nov. 



Description. — Shell very minute, white, thin and translucent, 

 coraparatively dull externally, but shining rather strongly inter- 

 nally. To the naked eye the shell is slightly oblique, convex, 

 and nearly orbicular, and owing to its minuteness and delicacy no 

 sculpture is ordinarily visible, but in strong sunlight an extremely 

 delicate radial and concentric sculpture is just discernible. 

 Under a pocket lens the umbos are acute and prominent, hinge 

 line straight, and falling very little short of the full length of the 

 valve, auricles relatively large and subequal, with radiating and 

 concentric sculpture, the former being much the stronger. The 

 whole surface of the shell shows a delicate tesselation due to the 

 regular radial and concentric threads, the i-adial threads number- 

 ing from about fifteen at the middle of the valve to about thirty 

 at the ventral margin, intermediate threads making their appear- 

 ance as the valve grows ; the concentric threads number from 

 about fifteen to twenty. 



Dimensions. — Length, 1.5 to 2.5 mm.; height, 1.5 to 2.5 mm. 



Locality. — Back Beach, Point Nepean. 



