Class VI. LEPAS. ACORN-SHELL. 



147 



L. Lin. Syst. 1108. Gni. Lin, 

 3207. Faun. Suec. No. 2123. 

 List. Angl. iah. v. Jig. 41. 



Lin. Tr. viii. 23. 

 Mont. Test. Br. 7. 



* L. with six unequal valves, conoid, truncated, 

 sulcated, smooth ; operculum obtuse ; at each 

 of the ends of the lower divisions of the opercu- 

 lum there is a groove and process, which unite 

 with a similar groove and process in each cor- 

 responding part of the upper division; the 

 transverse strice on the upper pair are plain, or 

 not striated ; an unerring character by which it 

 may be distinguished from L. Balanus ; size 

 at the base from one quarter to six-eighths of an 

 inch, height from a quarter to half an inch. 

 Adheres to the same bodies. Tab. xl.Jig. Q. 



2. BALA- 

 NOIDES. 



sulcated. 



Lepas Cornubiensis. Ellis Ph. 



JV. 1758. iah. xxxiv. Jig. 



16. 

 Borlase Nat. Hist. Cornioa II. 



Lepas punctata. Lin. Tr. viii. 3. cornubi- 



24.? 

 Balanus punctatus. Mont.Test. 



Br. 8. t. \.f.5.} 



ENSIS. 



Cornish. 



L. in form of a limpet, with a dilated bottom, 

 and rather narrovv^ aperture ; the shell sulcated 

 near the lower edges ; lids obtuse. Diameter 

 a quarter of an inch. Tab. xl.Jig. 3. 



L 2 



