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 obtuse 



Linn. Fatm. Suec. 1. p. 385. No. 1348 2. 



No. 2123. 

 Balanus vulgaris parvus conlcus e senis laminis compositus, vertice 



operculo bifido rhomboide occluso. Da Br. 



Conch, p. 2^S. sp.6S. tab. 11, Jig. 1. 

 Balanus cinereus, 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. fig. 41. 



These sh<-ilv are found in the greatest abundance on all the British 

 shores, adhering to rocksy shells^ Sic. S(c. 



Da C(;sta says, this species, when not affixed on flat, but uneven 

 surfaces, sometimes, but rarely, extend dov/n into a pretty long rugged 

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

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



