BIVALVE SHELLS. 5 



A. Testa orbicularis j sinus paUii obliquus, triangularis j trachea- 

 connexcB j jjes subquadrangularis. Dosiniana, Gray. 



Genus 1. DOSmiA. 



Animal orbiculare, compressum ; pallium in margine plicatum ; 

 tracheaj binae connexae apertura simplici terminatee ; pes magnus 

 compressus, subquadvangularis, labiorum appendices angustae, 

 triangulares, intus jn-ofunde striato-lamellosse ; branchi» inrequa- 

 lissirase internse niajores subquadratae. 



Testa orbicularis, lentiformis, concentrice striata, sub umbones 

 lunulata; cardine utraque valva tridentato, dente hmulari elon- 

 gato, compresso ; hgamentum externum partim sub pube con- 

 ditum ; sinus palhi profundus, obhquus, triangularis, apice acu- 

 minatus. 



Pectunculus, Lister (1686), Syn. Conch. 



Concha rotunda, Gualtieri (1742), pl. 76. 



Le Dosin, le Cotan (1757), Adans. Seneg. p. 224. 



Venus (spec), Li«/?/(1758), Syst. Nat. ed. 10. p. 689. 



Circumphalos (ex parte), Kleiti (1753), Ostrac. p. 146. 



Venus, Limie (1767), Syst. Nat. ed. 12. p. 1134. 



Milller (1776), Zool. Dan. Prodr. p. 247- 



Born (1780), Mus. Vind. Test. p. 70. 73. 



Gronovius (1781), Zooph. Gronov. p. 271. 



Schroter (1783), Gmel. 1788, ^-c. 

 Artemis, Foli (1791), Test. Ult. Sicil. p. 98. t. 1. 



Oken (1815), Lehrb. der Naturg. p. 229. 



Blainv. (1825) Malac. subgenus Veneris, p. 556. [t. vi. 



De5/i.(1830) Encycl.MeVi.; [\S35) inLamk.An.s. Vert.ed.2. 



Agassiz (1845), Icon. des Coq. Viv. Rep. Idetit. p. 16. 



Nyst (1846), Coq. Foss. de Belg. p. 183. 



Gray (1838), Cat. Cyth. Analyst, t. viii. p. 308. 

 Cvtherea (spec), Lamk. (1818) An. s. Vert. t. v. p. 572, 573. 



Turton (1822), Conch. Brit. p. 162. 



Fleming (1828), Brit. Anhn. p. 445. 



Menke (1830), Syn. Meth. Moll. p. 116, &c. 



Macgilliv. (1844) Moll. of Scotl. p. 212, 263. 

 Dosinia, Scopoli (1777), intr. ad Hisf. Nat. p. 399. 



Gray (1840), Syn. B. M.; (1847), Proc. Zool. Soc. p. 183. 



Sowerby (1842), Conch. Man. p. 141. 



Desh. (1849) Traite Elem. p. 610. 

 Orbiculus a, Megerle (1811), Mag.fur die neust. Entdeck. p. 58. 

 Exoleta, Brown (1827), Conch. Text-book. 

 Asa, Leach (1819), MSS. 



Venus /3, Schumacher (1817), Essai d'un Nouv. Syst. p. 152. 

 Arctoe, Risso (1826), Eur. Merid. t. iv. p. 362. 

 Lucina (spec), Lanik. (1818) An. s. Vert. t. v. p. 543. no. 13. 



