LEPAS. '45 



CLUB-SHAPED ACORN. 

 PL 7. /. 2. Mr. Sower by. 



12. Lepas clavata. L. testa clavata elongata ; operculis obtusis. 



Shell club-shaped, elongated ; operculum obtuse. 



Lepas elongata. L. testa cylindrica nivea, pellucida seocvalvi suprafissa; 



operculo obtuso sulcata transversim striato. Linn. Gmel. p. 3203. 

 Balanus fistulosus. B. testa tubulosa elongata striata, valvulis superne 



dehiscentibus, apertura patula. Brug. Encycl. Meth. Hist. Nat. 



torn. 6. p. 166. 

 Penn. Brit. Zool. ed. 1812. A. t. 40. f. 4. Chem. Conch. 8. t. 98. f. 838. 



Schroter der Berl. Naturf. 5. t. 5. f. 2. Journ. 4. t. 2. f. 2. 



Encyclop. Method, pi. 164. f. 7, 8. Linn. Trans. 8. p. 26. 

 Balanus clavatus. Ellis, Zooph. p. 198. t. 15. f. 7, 8. Mont. Test. 



Brit. p. 10. 



A tubular club-shaped shell, from one inch, to two 

 and a half, or three inches long. The exterior is striated, 

 rough, and sometimes tuberculated. The aperture is 

 large, and divided into six parts, by as many unequal 

 valves, three of which are wider than the others. The 

 operculum is composed of four valves obliquely striated. 

 The colour of the shell is white, sometimes greenish. 



This species bears a very strong resemblance to the 

 L. balanoides, when that shell happens to be elongated, 

 as it is occasionally found. See Donovan, pi. 36. f. 3. 

 It is often observed in large clusters so wedged together 

 that the summits only of the shells can be distin- 

 guished. It inhabits Iceland, and the northern parts of 

 Europe ; was brought from Newfoundland by Sir 

 Joseph Banks ; and has been taken by dredging in the 

 sea at Weymouth, but is by no means a common shell 

 on the British coasts. 



