292 ANOMIA. 



retusa. 10. Shell ob-ovate, striated, retuse, and 

 longitudinally indented ; umbo perforated. 



Anomia retusa. Linncsus Syst. Nat. p. 1151. Gmelin, 

 p. 3342. 



Inhabits the Norway Seas on Alcyonia. Pennant. 



Linnaeus appears to have given the above description from a 

 shell which Pennant sent him, but it is so short that the 

 species has not been ascertained by any subsequent author. 



truncata. 17. Shell transversely oval, with one 

 valve keeled in the middle, and the other in- 

 dented longitudinally ; umbo perforated in 

 one valve, and the other truncated. 



Anomia truncata. Ldnnaus Syst. Nat. p. 1152. Born 

 Mm. p. 118. t. 6. f. 14. Chemnitz, viii. p. 90. t. 77. f. 

 701. Schroeter Einl. iii. p. 393. Gmelin, p. 3343. 

 Poli Test. p. 191. t. 30. f. 16 and 17. 

 Terebratula. Enc. Meth. p. 243. f. 2. 

 Inhabits the Norway Seas on Corallines. Linnaus. Mediter- 

 ranean. Humphreys. 

 Shell about five lines long, and seven broad ; depressed, of a 

 brownish or yellowish white colour, and obsoletely striated 

 longitudinally ; one valve is longitudinally keeled, and the 

 other has a corresponding furrow in the middle. 



capensis. 18. Shell roundish, strongly striated 

 longitudinally, with one valve nearly flat, 

 and the other convex ; margin crenatecl, and 

 one of the valves sub-truncated. 



Anomia Capensis. Gmelin, p. 3347* 



Anomia striata Promontorii Bonae Spei. Chemnitz, viii. 

 p. 94. t. 77- f. 703. 



Anomia, No. 8. Schroeter Einl. iii. p. 410. 

 Inhabits the Sea at the Cape of Good Hope. Chemnitz. 

 Shell a little more than an inch long, and the breadth rather 



exceeds the length ; the colour is white or reddish, and the 



middle of the inside of the flat valve is longitudinally ribbed. 



decollata. 19. Shell sub-orbicular, strongly stri- 

 ated longitudinally, and the inside ribbed ; 

 one valve truncated, and the other perforated 

 at the umbo. 



Anomia decollata. Chemnitz, viii. p. 96. t. 78. f. 705. 

 Anomia detruncata. Gmelin, p. 3347. 



