285 



<§ttlM XV. 



ANOMIA:t 



SHELL WITH UNEQUAL VALVES, OF WHICH ONE IS 

 FLATTISH, AND THE OTHER MORE GIBBOUS AT 

 THE BASE ; IN SEVERAL SPECIES THE FLAT VALVE 

 IS PERFORATED NEAR THE HINGE; HINGE 

 TOOTHLESS, WITH A LINEAR PROJECTION IN THE 

 FLAT VALVE, WHICH IS JOINED UNDER THE BEAK 

 TO THE OPPOSITE VALVE BY A STRONG CARTI- 

 LAGE. 



craniolaris. J. Shell sub-orbicular, with the up- 

 per valve conical-convex, and the lower flat, 

 with three perforations near the hinge. 



Anomia craniolaris. Linnceus Syst. Nat. p. 1150. Ret- 

 zius in Berlin Naturf. ii. p. 73. t. 1 . f. 2 and 3. Chem- 

 nitz, viii. p. 72. t. 76. f. 687. f. a tof. Schroeter Einl.in. 

 p. 381. Gmelin, p. 3340. 

 Crania personata. Lamarck Syst. des Anim. p. 138. 

 Crania. Enc. Method, t. 171. f. 1 to 7. 

 Variety. Somewhat heart-shaped. 

 Cognata Anomia craniolaris. Chemnitz, viii. p. 78. t. 76. 

 f. 688. 

 Inhabits the coasts of the Philippine Islands. Hetzius. 

 Shell about an inch long, and three quarters of an inch broad ; 



t Several of the Anomiae described by Linnaeus have not been found \m a re- 

 cent state, and besides the fossils, I have omitted the following of Gmelin's 

 species, which are too imperfectly described to be worth retaining. A. avena- 

 cea, p. 3349.- A.fiexuosa, p. 3349. A. gryphoides, p. 3348. A. nucleus, p. 3349. 

 4- rvgosa, p. 3349. A. ventrkosa, p. 3348. 



