2 



Striatus. Lepas Stroemia. Giiicl Sysf. p. 3214. 



p. p. 14—556 jf^^ii 2:ooL Dan. iii. t. 94. 



Lepas intertexta. Lin. Trans, viii. p. 26. 



Fulf. Hutch. Dorset, t. 1 . f. 9. 



Although this fpecies of Balamis differs fo materially 

 in ftru(5lure from all others of the genus, yet upon ftridl 

 examination of live fhells it really proves to be a multivalve, 

 and not a bivalve, as we luggefted in the Addenda to Tefla- 

 cca Britannira. 



The operculum is moveable on a cartilagenous hinge, and 

 compleatly clofes the opening of the lower valve, but being 

 compofcd of two plates, very clofely united longitudinally, 

 polTefling a fmall independent motion, which might very 

 readily be overlooked, is fufficient to conftitute it a multi- 

 valve fliell. 



Spokgeosus. 



Shell ovate, with fix angulated wrinkled compartments. 

 Tab. i7, V. 4. 5,6. terminating in much elevated points, and furnifhed with nu- 

 merous fpines ; the three anterior divifions are broader, and 

 not fo long as the three pofterior ones : thefe terminate in 

 a flat concentrically wrinkled bafe, beneath which is affixed 

 a cup, rounded at the bottom, whofe margin correfponds 

 with the circumference of the bafe, and to which it is con- 

 ne6led by a ligament to the crenulated edge of the cup; 

 this part is hollow within, but has no fliare in concealing 

 the animal inhabitant, as there is no communication between 



it 



