VENUS.— Plate XX. 



aiitico rolmdalo,fukesceiite, purpureo-gtiseo uiidalo- 

 h-iilig'mosii, Icecigald, vel obscure concentrice piano- 

 lira (a. 

 The Donax-like Venus. Shell triangularly ovate, com- 

 pressed, neai-ly equilateral, thick, posterior side 

 rtexuously angled, anterior rounded, fulvous, wave- 

 freckled with purple-grey, smooth, or obscurely con- 

 centrically flatly ridged. 

 Chemnitz, Conch. Cab. vol. xi. p. 231. pi. 202. f. 1983, 

 1984. 



Boiiax T'eueri/ormis, Lamarck. 

 J't'iiiis sem.icancellata, Koch. 

 Ualj. Japan. 



Chemnitz truly noticed that this peculiar species com- 

 bined the form of Doiiax with the hinge of FeuHS. 



Species 96. (Fig. a, b, JSIus. Cuming.) 



Venus scalarina. Ven. testa ovato-cuueiformi, nunc 

 compressd nunc venlricoslitsculd, fulvescente-albd, 

 r/riseo lineari-uiidatd, coi/cetitrice liratd, liris valde 

 irregnlarUms, obtmis, ad latera corruijalo-prodactk, 

 area ligameuti -siibexcavatd. 



The laddeu-marked Venus. Shell ovately wedge- 

 shaped, sometimes compressed, sometimes rather 

 ventricose, fulvous-white, linearly waved with grey, 

 concentrically ridged, ridges very irregular, obtuse, 

 corrugately produced at the siiles, ligamentary area 

 slightly excavated. 



Lamarck, Anim. sans vert. vol. vi. p. 3.)9. 

 Venus conularis, Lamarck. 



Hab. Australia. 



Very closely allied to F. Aphroditioides and strii/osa, 

 but of a different form with the ligamentary area more 

 defined. 



