VENUS. . 239 



plain and sharp-edged : beaks pointed, turned in and curr- 

 ing to one side, without any heart-shaped depression under 

 them : teeth strong, with a fourth remote lateral one on 

 one side : diameter four inches and a half , x circumference 

 twelve inches or more. 



Variety. With five or six much raised and rugged con- 

 centric ridges. 



On most sandy coasts, v. v. 



16. Venus Chiotie. Thick-lipped Venus. 



Lister, pi. 269. f. 105 Donovan, pi. 17 Linn. Trans. 

 vi. pi. 17. f. 3, 4 Da Costa, pi. 14. f. 1 Dorset Cat. pi. 6. 



Shell strong, thick, convex, rounded and a little produced 

 on the cartilage side, covered with a smooth glossy chesnut 

 skin, and generally marked with longitudinal and trans- 

 verse darker rays and bands, faintly wrinkled transversely, 

 and very finely striate longitudinally, especially towards the 

 sides, b*it these latter marks disappear upon the removal 

 of the skin, under which it is of a lighter or darker choco* 

 late brown ; inside glossy- white, with the margin plain and 

 very obtuse : beaks nearer to one end, oblique, turning to 

 one end, with a strong heart-shaped depression under 

 them : teeth four, the two middle ones lanceolate and close 

 together, the lateral ones diverging : length three inches ; 

 breadth nearly four. 



Western coasts, and South Wales, v. v. 



17. Venus ovata. Oval Venus. 



Lister, pi. 311. f. 147? Pennant, pi. 59. f. 3 Linn. 

 Trans, viii. pi. 2.f.4 Dorset Cat. pi. 1. f. 15. 



Shell somewhat oval, slightly convex, a little produced 

 and sloping on one side, opake, brown, with numerous 

 strong longitudinal ribs, which are crossed with fine trans- 

 verse stria? ; inside glossy^white or flesh-color, often purple 

 in the middle, with the margin finely notched: beaks nearly 

 central, turning a little to one side, with a faint heart- 

 shaped depression under them : length three-eighths of an 

 inch; breadth half an inch. 



Western coasts, Dublin and Bantry bays, and Cove, 

 v. v. 



i r> -IT 



18. Venus 



