SECTION X. 229 



There is a very elegant foffil fpecies of 

 Rhombus, yet undiicovered recent froin 

 fea, found in France and in Hordell chfFs 

 in Hampfhire. It is curioufly figured in 

 Brander's Foffilia Hantonienfia. p. 31. 

 PL V. fig. 64 a 68. 



The third genus is the Alatse or wing- 

 ed Rocks ; for fo I name them in com- 

 mon with moft authors, from their lip 

 being greatly extended, or expanded out- 

 wards, like a flap or wing, PI. V. fig. i. 



Some few kinds have the flap or wing 

 quite fimple, or with the edges even ; but 

 the greater part of thefe, as alfo of the 

 next genus or Aporrhais, have always to- 

 v/ards, or a little afide of the very top of 

 the mouth, a broad hollowed finus, which 

 I call the Scoops from which particular 

 Lifter calls them Purpura feu Buccina Bi^ 

 linguia, and clafles them Seftion XII. of 

 Lib. iv. Rumphius and Meufchen make 



Q 3 a diftind 



