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Concliae niarinae Gualt. contin. 



Class. I. sect. 4. mediocriter umbonatae et obliqiie 

 incurvatae. 



Genera: Concha subrotunda. (= Lucina sp., 

 Venus sp., Tellina sp.) 

 Tellina aequilatera. (= Mactra sp., Tel- 

 lina sp., Venerupis sp.) 

 sect. 5. cardine umbone destituto — Pinnae. 

 Genera: Pinna recta. (= Pinna sp.) 

 Pinna incurvata. (= Pinna sp.) 

 Class. II. Valvis aequalibus inaequilaterae. 



sect. 1. notabiliter umbonatae et recta incurvatae. 

 Genera: Concha subrotunda vulgaris. (=Car- 

 dium sp. , Vcnus sp., Cytherea sp., 

 P e c t u n c u 1 u s s[).) 

 Conoha cordifornns inaequilatera. (= Car- 

 dium sp., Cytherea sp.) 

 sect. 2. mecbocriter umbonatae et recta incurvatae. 

 Genus: Concha subrotunda. (zz Meleagrina.) 

 sec(. 3. notabiliter umbonatae et obbque incur- 

 vatae. 

 Genera: Concha subrotunda vel triangularis 

 vulgaris. (= Venus sp.) 

 Concha rhomboidalis. (= Arca sp.) 

 Chama inaequihitera. (= Venus sp. , Cy- 

 therea sp., Mactra sp., Cardium sp , 

 Tellina sp.) 

 sect. 4. mediocriter umbonatae et oblique invur- 

 vatae. 

 Genera: Concha subrotunda. (— Venus sp., 

 Lucina .sp.) 

 Concha pectiniformis inaequilatera. (= Lima.) 

 Telbna inaequabtera. (= Donax sp. , Tel- 



lina sp., Venus sp., ?Nucula.) 

 Muscuhis. (= Panopaea, Arca sp.) 

 Concha longa. (=Solensp., Lithodomus, 

 ?Mytilus sp., Cardita, Vulsella.) 



