VENUS. 133 



4. Venus reflexa. Reflected Venus. 

 Laskey, Wern. Soc. i. i>l. 8. f: 1. 



Shell somewhat orbicular, slightly produced at the ante- 

 rior side, a little convex, thin, with thin raised transverse 

 ridges turning upwards, but which at the anterior margin 

 become more expanded and undulated, and turn a little 

 downwards in a contrary direction towards the front mar- 

 gin ; between the ridges, and on the expanded plates are 

 very fine faint longitudinal lines which are hardly visible to 

 the naked eye : color pale yellowish-brown with obscure 

 reddish rays, which sometimes appear in arrow-shaped 

 spots : beaks turned to one side, with a long narrow heart- 

 shaped depression under them : inside white, with the mar- 

 gin finely notched : hinge with two of the teeth slightly 

 cloven : length an inch ; breadth rather more. 



It differs both from V. verrucosa, and V. Casina, in the 

 broad membranaceous folds of the anterior margin, which 

 reflect a little backwards, and the fine longitudinal striae 

 upon and between them : it is also of a more oblong shape, 

 with a lanceolate depression on the posterior slope, and is 

 about half the size. 



Scotland, south of Devon, and Bantry bay. v. u. 



5. Venus laminosa. Laminar Venus. 

 Laskeij, Wern. Soc. i. pi. 8. f. 16. 



Shell rather oval, elongated and running nearly straight 

 on the cartilage side, yellowish-white, with numerous thin 

 laminar, or sometimes rather rounded, transverse ridges, 

 very slightly bending up towards the hinge, and striate lon- 

 gitudinally between them ; these strias are very fine, and 

 appear sometimes only on the body of the shell, and some- 

 times only in the region of the hinge : beaks pointed, turned 

 much to one side, with a broad heart-shaped depression un- 

 der them ; inside white, with the margin finely notched : 

 hinge with four teeth, the outer- one above the depression 

 in one valve obsolete, or formed cnly by a cavity for the 

 reception of the correspondent tooth in the opposite valve : 

 length nearly an inch ; breadth an inch and a quarter. 



It has much the outline of V. G^allina, but is more 



elongated on the cartilage side, is marked with fine trans- 



x 3 verse 



