42 LEPAS. 



valves being united at top, and not separated, as usual, 

 by a broad triangular compartment. A narrow line is 

 all that distinguishes the divisions of the valves. The 

 shell is striped with violet, and often tipped with a 

 deeper tint of the same colour. The opening is very 

 small. The operculum is of four valves striated trans- 

 versely ; the two posterior valves are pointed. 



This Lepas is found in very considerable clusters, 

 fixed on other shells. It occurs in the Mediterranean, 

 on the coast of Barbary, and, according to Bruguiere, 

 on the coast of Senegal. 



CONIC ACORN. 



9. Lepas conoides. L. testa conica lam, valvulis acuminatis, apertura 



angustissima. Donov. Br. Shells, pi. 30, f. 3. 

 Shell conic, smooth, the valves pointed, aperture very small. 

 Mont. Test. Brit. p. 12. Linn. Trans. 8. p. 24. 



The L. conoides, as figured by Donovan, is very like 

 the preceding species, but may be distinguished by its 

 transverse striae, which are wanting in the L. angustata. 

 The shell is of a violet colour, and the valves are but 

 slightly separated at top. It is an English species, and 

 was discovered by Mr. Bryer, of Weymouth, adhering 

 to the L. anatifera. 



