ARCA. 231 



Inhabits the coasts of Curac,oa. Schroeter. 



This is rather an uncertain species, and is described by Schroe- 

 ter to have a mossy epidermis, beneath which it is browrf 

 mottled with white, and the inside is brownish ; the summits 

 are slightly recurved, and under them there is said to be a 

 lanceolate depression ; the figure represents it to be about 

 the same size as A.fusca, and furnished at both ends with 

 four hairy pencil-like tufts. 



fusca. 14. Shell transversely ovate, with longitu- 

 dinal granulated striae ; summits approxi- 

 mated ; margins nearly entire and closed. 



Area fnsca. Bruguiere Enc. Meth. p. 102, 

 Area barbata, Var. £. Gmeiin, p. 3307. 

 Area, No. 2. Schroeter Einl. iii. p. 279- 

 Amygd;dum frixum. Chemnitz, vii. p. 185. t. 54. f. 534. 

 Lister Conch, t. 231. f. 65. Gualter, t. QO. f. B. D'Avila, 

 t. 7. f. R. 



Inhabits the coasts of Barbadoes. Lister. Antilles. Chem- 

 nitz. Madagascar. Bruguiere. 



Shell commonly about half or three-quarters of an inch long, 

 and the breadth exceeds the length rather more than one 

 third, but Martini's figure represents a specimen twice as 

 large, and is badly executed ; it is of a chestnut brown co- 

 lour, with one or two broad whitish rays extending from the 

 summits to the margin. Schroeter has conjectured that this 

 may be the Linmeau A. modiolus. 



modiolus. 15. Shell oblong, longitudinally striat- 

 ed, with a projecting angle on the anterior 

 side, and the other incurved. 



Area modiolus. Linnccus Syst. Nat. p. 1141. Gmeiin, p. 



3307. 

 Mytilus exustus. Schroeter Einl. iii. p. 432. Gmeiin, p. 



3352. 

 Mytilus citrinus. Chemnitz, viii. p. 175. t. 84. f. 754. 

 Mytilus flavicans. Colanders MSS. Callone's Cat. p. 43* 



No. 794. 

 Lister Conch, t. 365. f. 205. 

 Inhabits the Mediterranean. Linnaus. Coast of Barbadoes. 



Lister. St. Thomas and St. Croix. Chemnitz. 

 Shell about thirteen or fourteen lines long, and five or six broad; 

 yellow, more or less variegated with chestnut, and the inside 

 white tinged with violet; valves striated longitudinally, and 



