8 MULTIVALVES LEPAS. 



Scientific Name- Locality. Common Name. 



Punctatus British Seas Punctured B. • • 



Radiata Rayed • • • • do • • 



Cariosa • Ridged . . . do • • 



Psittacus • • Chili Beaked • • • do • • 



Hemispherica • • Africa Hemispherical do 



Laevis East and West Indies • • • Smooth do • • 



Striatus English and Dutch coasts Striated • • do • • 



Family 2. — Having radiated cells at their base. 



Diadema Mediterranean, &c. Turban Barnacle 



Balanaris Whale • • • do • • 



Testudinaria Turtle .... do • • 



• Quinquevalvis • Five valve do •• 



Family 3. — Having a porous base. 



Porosus East Indies, &c. Porous Barnacle 



Purpurascens • • • • Falkland's Isle Purple • • • • do • • 



Family 4. — Having a cup-like appendage at the base. 



Galeata Mediterranean, &c. Helmet-like do • • 



Spongeosa Dorsetshire Spongy • • • do • • 



Family 5. — Tubular and truncated at both ends. 

 Tracheaformis Windpipe • do • • 



^ bccte-S DiviDiPW W.Shells attached to a fleshy peduncle. 



Notwithstanding the great affinity which exists 

 throughout the Lepas genus, there are a few ex- 

 ceptions, in which a resemblance is difficult to 

 be traced; as, for example, in the L. scalpellum, L. 

 anserifera, L. anatifera, and varieties emanating from 

 tbem. These three species are closely allied to each 

 other, but exceedingly dissimilar to the rest of the 

 genus, for the generality of Lepades are affixed to 



