— 7 — 



Hactra Linn. emend. contin. 



Subjungitiir Scrobicularia , quam diversam tamen 



sistit. 



Sequitur Schweigg. 1820. Naturg. p. 702. 

 Gray 1821. Lond. Med. Repos. * — genus Lepto- 

 podum. 



Blmnv, 1825. Malac. p. 553. — genus Conchaceo- 



rum priniae sectionis. 



Pariter Rang 1829. Man. p. 311. 

 Fleming 1828. Hist. Br. An. p. 409. 426. — genus 



Maclradarum, 

 QuoY et Gaim. 1834. Voy. Astrol. Zool. III. p. 518. 

 Oken 1835. Allg. Naturg. V. 1. p. 311. 

 Macgill. 1843. Moll. Aberd. p. 217. — genus Mac- 



trinorum. 

 Gray 1844. Rev. zool. p. 407. — genus Mactri- 



darum, 

 D'Orb. 184.5- Pal. franc. * — genus Myacidarum. 



Pariter Geimtz 1846. Gruadr. d. Verst. p. 408. 

 Synon. Pectunculus laevis j(sp,) List. 



Concha subrotunda vulgaris (sp.), Tellina aequi- 

 latera (sp.) et Chama inaequilatera (sp.) Gualt. 



Isocardia (sp.) Klein. 



Chama (sp.) D'Argeny, 



Cardium (sp.) Linn. obm. 



Trigonella Da Costa. Humphr. 



Callista et Callistoderma (pars) Poli. 



.Spisula, Mulinia, Schizodesma et Mactra Gray. . 



Hemimactra, Schizodesma ct Mactra Swains. 



IHactra Gray 1837. Loudons Mag. N. H. New Ser. L p. 

 370. * > Wiegm. Arch. 1838. I. p. 86. 

 Genus Mactradarum arctius circumscriptum, disjunc- 



tis Schizodesma, Spisula, et Mulinia. 

 SwAiNS. 1840. Malac. p. 368. — subgenus Mactrae. 



JHactracaea (? Latr.) BERinoLD vid. seq. 

 Mactracea (Mactracees) Lamck. 1809. Phil. zool. 



