86 CATALOGUE OF THE MOLLUSCA 



which we think probable. The range of Cytherea Chione in 

 Britain does not extend much beyond the Cornish coast. 



92. FULL ASTRA, Sowerbi/. 



1. P. AUREA, Gi7iel. 



Venus aurea, Mont. Test. Brit. 129. 

 Frona the fishing boats, Cullercoats, rare. — /. H. F. Whit- 

 burn. — Rev. G. C. Abbes. 



2. P. viRGiNEA, Linn. 



Venus vh'ginea, Mont. Test. Brit. 128. 

 On most parts of the coast, but not common. 



3. P. DECUSSATA, Linn. 



Vemis decussata, Mont. Test. Brit. 124. 

 In shallowish water, not common. Low Lights. South 

 Shields sands. — A. H. Alnmouth Bay, rare. — Mr. Embleton. 

 Holy Island, and Hartlepool. 



4. P. VULGARIS, Sow. 



Venus pullastra, Mont. Test. Brit, 125. 

 On sandy shores mixed with stones, not uncommon. 



5. P. PERFORANS, Mont. 



Venus x>erfo7'ans, Mont. Test. Brit. 127. 



In the shale rocks of our coast, common. 



This species does not appear to excavate its own habitation, 

 but merely to occupy the holes bored by the Pholades. It is also 

 often found in crevices of the rocks. 



Family. Ctprinid^, Forbes. 



93. CYPRINA, Lamarck. 



1. C. IsLANDiCA, Linn. 



Venus Islandica, Mont. Test. Brit. 114. 

 In deep water, common. 



94. AST ARTE, Sowerhy. 

 1. A. Danmoni^, Mont. 



Venus Danmonia, Mont. Test. Brit. Supp. 45, t. 29, f 4. 

 In deep water, not uncommon. Mr. R. Howse dredged it in 



