PLATE XXXVI. 



FIG. II. III. 

 LEPAS BALANOIDES. 



COMMON ACORN SHELL. 

 SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell conic truncated, of six valves. Operculum bifid. 



Lepas Balanoides : testa conica truncata ; operculo obtuso. 



Linn. Faun. Siiec. 1. p. 385. No. 1348 2. 



No. 2123. 

 Balanus vulgaris parvus conicus e senis laminis compositus, vertice 



operculo bifido rhomboide occluso. Da Br. 



Conch, p. 248. sp. 68. tab. 11 , fig- 7- 

 Balanus ciuereus, velut e senis laminis striatis compositus, ipso vertice 



altera testa, bifida, rhomboide occluso. Balani 



parva species. List. II. An. Angl. p. 196. 



///. 41. tab. 5. fg. 41. 



iliese shelLf are found in the greatest abundance on all the British 

 sliores, adhcj'ing to rocks, shells., lisc. i^c. 



Da Costa says, this species, when not afiixed on flat, but uneven 

 surfaces, sometimes, but rarely, extend down into a pretty long rugged 

 tubular stalk or root. This variety is noted by Pennant, and an ex- 

 traordinary, but mutilated specimen of it, is shewn at fig. 3. 



