34 



L. Fissurella, Lam. 

 1. graeca. 



Fissurella graeca, Lam. — Patella graeca, Ltw. 



— Patella reticulata, Don. 

 Test. jun''. Fissurella aj^ertura, Flem. — 

 Patella apertura, Mont. — Sipho radiata, 

 Brown. 

 The animal is described by Phillippi. On the 

 Manx coast, it varies in colour from cream-white to 

 deep orange, approaching scarlet. 



On shells, especially Pecten opercularis, in deep 

 water on the north coast. Frequent. 

 The young shell is seldom taken. 



LI. Lottia, GraT^. 

 1. testudinalis. 



Patella testudinalis. Mull. Fabr. — Patella 



Clealandi, Sow. — Patella clypeus, Brown. 



Animal white, margin of the cloak entire ; gill 



elongato-triangular ; tongue like that of patella, but 



not spinous. 



Otho Fabricius observed the remarkable position of 

 the branchus in this animal, but mistook the nature 

 of the organ : he says, " Supra in collo apertura 

 parva, unde emittere potest proboscidem sive tubu- 

 lum compressum longum albidum dextrum extra 

 corpus prominentum : forsitan membrum ani vel 

 genitale .?" — Fauna Groenlandica, p. 385. 



On the under surface of stones at very low water. 

 Ballaugh. 



? 2. pulchella. 



