1352 MUTEtA 



Group of Miitcla exotica. 



Shell elongate, rhomboid, wider and subtruncated behind, 

 subsolid. 



MuTEi.A EXOTICA (Lamarck). 



Shell elongated, scarcely subsolid, somewhat rhomboid, be- 

 ing wider behind than in front, subinflated, inequilateral; um- 

 bonal region somewhat raised and inflated, elongated ; poste- 

 rior ridge full and rounded above, fading out below ; dorsal line 

 nearly straight; base line straight or slightly incurved medially, 

 full behind the middle ; anterior end rounded, but cut away be- 

 low ; posterior end obliquely subtruncate ; epidermis greenish ; 

 hinge containing a great number of irregular, rudimentary 

 teeth ; nacre brilliant, pale reddish or coppery ; muscle scars 

 feeble, irregular; dorsal scars forming an uneven row; pallial. 

 line faint, somewhat sinused behind. 



Length 155, height 55, diam. 35 mm. 



Tropical Africa. 

 Jridina exotica Lamarck, An. sans Vert., W, 1819, p. 89; Enc. 



Meth., IL 1827, p. 147, pi. cciv, figs, i, ih. — Sowerby^ 



Conch. Icon., XVJ, 1868, pi. i, fig. 2. — Clessin, Conch. Cab. 



Ano., 1875, p. 231, pi. Lxxi, fig. I. 

 Anodonta exotica IjT.ainville, Man., 1825, p. 538, pi. lxvi, 



%• 3- 

 Platiris (Iridina) exotica Lea, Svn., 1838, p. 33; 1852, p. 54; 



T870, p. 88. ' - ^ ^ - 



Miitela exotica Simpson, Syn., 1900, p. 903. 

 Pliodon (Iridina) exotica Germain, Arch. Zool. Exp. et Gen.,. 



(5L T, 1909, p. 58. 

 Pleiodon exoiiciis P--rTEL, Conch. Sam., IH, 1890, p. 188. 

 Jridina elongata Sowerby, Rec. and Fos. Shells, VH, 182 1, fig. 



I. — SowERBY, Conch. Man., 1839, fig. 150. — Sw^ainson, Tr. 



on Mai, 1840, p. 286, fig. 60. — Reeve, Conch. Syst., I, 1841, 



p. 122, pi. xcn. — SowiCRBY, Conch. Icon., XVL 1868, pi. \^ 



fig. I. 

 Platiris (Spatha) eionf^ata Lea. Syn., 1838. p. 34. 

 Mutcla elongata P.e:tei . Conch. Sam.. TTL 1890, p. 187. 

 Iridina striata (")ken, Tsis, 1834, p. 458. 



