LEPAS. 



51 



inch broad at the base, and a quarter of an inch high. 

 The valves are triangular and painted with violet rays, 

 which are close together at the apex, but more open at 

 the circumference : the intermediate compartments are 

 highly polished, and very finely striated transversely. 



Many of these shells were found fixed to the bottom 

 of a ship. Their country is unknown. 



PALMATED ACORN. 



21. Lepas palmipes. L. testa erecta conica, valvulis basis palmatis. 



Linn. Gmel. p. 3209. Mant. pi. 2. p. 544. 

 Shell erect and conic ; valves palmate at the base. 



A white shell, the size of a large pea, smooth, and 

 somewhat depressed : the valves are divided from the 

 base as far as the middle, into five or six fingered seg- 

 ments : the operculum is obtuse and four valved. The 

 digitated divisions of the valves are irregular, and not 

 unlike the fangs of the molar teeth. 



Inhabits the ocean, but what part is not mentioned. 



RUGGED ACORN. 

 PI. 8./. 1, 2, 3, 4. Mr. Sowerby. 



22. Lepas crispata. L. testa ovali truncata conica, areis sex ccerulescen- 



tibus albo obumbratis, sex aliis elevatis rubellis spinosis perpendicula- 



riter striatis. Linn. Gmel. p. 3214. 

 Shell oval truncated and conic, with six bluish valves shaded with white, 



and six reddish valves spinous and striated perpendicularly. 

 Balanus crispatus. B. testa conica truncata, valvulis apice nudis, inferne 



muricato crispaiis. Brug. Encyclop. Method. Hist. Nat. torn. 6. 



p. 166. 

 Schrbter Einl. in Conch. 3. t. 9. f. 21. Favanne Conch, t. 59. f. A. 9. 



Encyclop. Method, pi. 164. f. 11. 



This shell, for the knowledge of which we are in- 



