68 LEPAS. 



i. anatifera, but is now separated by Bruguiere, upon 

 a very sufficient foundation. It resembles the duck 

 barnacle in every respect, except the dorsal valve; 

 which is strongly carinated, and divided throughout its 

 length into many very sharp teeth. Lister is the only 

 author who has described this species (not to mention 

 Klein, whose figure is copied from Lister,) except Bru^ 

 guiere, and the specimen which he observed was more 

 decidedly toothed, and the teeth were deeper and more 

 numerous than in the shell represented by Lister. It 

 inhabits the Mediterranean, and is found in groups like 

 the common species, but is smaller. 



FURROWED BARNACLE. 

 PL 12. /. 1. Mr. SOWERBY. 



40. Lepas sulcata. L. testa subtriangulari t quinquevalvi, sulcata. Linn. 



Trans. 8. p. 29. 

 Shell somewhat triangular, five valved, sulcated. 

 Mont. Test. Brit. p. 17. pi. 1. f. 6. 



We are indebted to Mr. Montagu for this new and 

 elegant species of barnacle, which he found adhering to 

 the Gorgonia Flabellum on the Dorsetshire coast, near 

 Portland Island. The lower valves have from fifteen to 

 nineteen ribs diverging from the lower angle to the mar- 

 gin, where they are met by seven or eight corresponding 

 ribs in the superior valves. It must be noticed that the 

 anterior rib of the lower valve is always the strongest. 

 The dorsal valve is somewhat keeled, and marked with 

 strong longitudinal striae. Pedicle extremely short, and 

 seldom to be seen. Colour of the shell faint bistre, 

 often sordid white. Length from one tenth to half an 

 inch. Breadth of the largest, four tenths of an inch. 



