190 BIVALVE SHELLS. 



bidentatiis ; ilentibus minimis, approximatis v\x diverjrentibus ; 

 li<r!unc"iitum externum. Impressioncs musculares ma<rna;, ovato- 

 semihuiares ; iinpressio pallii postice sinuosa ; sinu:> latus, panun 

 profundus, subtrij^onus, borizontalis. 



Concba trifidos, Gunltieri (1742), Ind. Test. pi. 95. f. A. 

 Donax, Linn. (1758) Syst. Nat. cd. 10. p. (382; (1767) ed. 12. 

 p. 1128. 



Gronovius (1781), Zooph. Gronov. p. 268. 



Chemnitz (1782), Conch, vi. 271. 

 Cuneus, Da Costa (1778), Conch. Brit. p. 204. 

 Venus, Chemnitz (1784), Conch, vii. 50; (1788) x. 35?. 



Gmelin (1788), p. 3269. no. 147. 



Schrbter (1783), Einl. iii. 173. 



Brocchi (1814), Conch. Foss. Subap. ii. 559. 



Cortesi (1819), Sa(/gi Geol. p. 40. 

 Venus saxatilis, Fleurian de Bellevue (1802), Mem. sur les Moll. 



Per/or. p. 4. 

 Rupeilaria, Renieri (1807), Tavole di Regni Anim. t. 7 (non 

 Bellevue). 



Brocchi (1814), Conch. Foss. Subap. ii. 546. no. 9, 24, 25 

 (non Bellevue). 



Turton (1822), Dithyr. Brit. 



Gray (1847), Proc. Zool. Soc. p. 184. 

 Venerii-upis, Sowerby,jun. (1839) Conch. Man. p. 113. 



Veroni (1846), Cat. An. Everteb. p. 13. 

 Venerupes, Swainson (1842), Malac. Mon. p. 376. 



Synopsis Specierum. 

 I. Species lamellosa;. 



a. Laviyatee, 1, 2. 



b. Longitudinaliter striata;, 3-13. 

 II, Species striatae vel decussata;, 14-19. 



I. Species lamellosce. 

 a. L(Evigat<s. 



1. Venerupis Cordieri. 



V. testa ovato-transversa, ina:quilaterali, inflato-cylindracea 

 trnnsversim elegantcr lamellosa ; lamellis postice latis, por- 

 rectis, in medio attenuatis. antico evanescentibus ; cardine 

 lato, bidentato; margiuibus iutegris, aeutis. 



I 



