724 MOLLXJSCA OF 'LIGHTNING* ETC. EXPEDITIONS. [Juiie 7, 



Distribution. " Now." {Loven), Danish coasts {Mus. Copen- 

 hageni), S. Devon to Egypt, Black Sea, Adriatic, Mogador, Madeira, 

 W. Africa?, Canaries ; 0-45 fms. 



Fossil. Upper Tertiaries : Red Crag, S.W, and S. France, Italy. 



The right valve in this species invariably overlaps the other, so 

 that the shell is strictly iuequivalve. The young is triangular, and 

 has prominent beaks ; it is the D. bellardii of Canefri, and might 

 easily be taken for a distinct species. 



Summary of the foregoing Mollusca. 



Families. 



VIII. KELLIID^ 



IX. LUCINID^ 



AxiNus, p. 701 9 



DiPLODONTA, p. 704 . . 2 



X. CARDITID^ Cardita, p. 705 3 



XI. CARDIID^ Cardium, p. 706 12 



XII. CHAMIDiE Chama, p. 709 1 



XIII. CYPRINID.E Isocardia, p. 710 1 



Cyprina, p. 710 1 



ASTARTE, p. 711 8 



Circe, p. 713 1 



XIV. VENERIDiE Venus, p. 714 10 



Venerupis, p. 716 ... . 1 



Tapes, p. 717 3 



LuciNOPsis, p. 717. ... 1 



XV. TELLINIDiE Tellina, p. 718 14 



Psammobia, p. 722 .... 4 



DoNAx, p. 723 3 



Total 98 



EXPLANATION OF PLATE LXI. 



Fig. 1. Scintilla rotunda, p. 695. 



2. Scacchia tcncra, p. 696. 



3. Mmitacida ^lelhtcida, p. 697. 



4. • ■ ovata, p. 698. 



T). Axinus orhicnlatus, p. 702. 



6. tortuosus, p. 702. 



7. incrassatus, p. 703. 



8. ■ siibovatus, p. 704. 



9. Astarfc acuficostafa, p. 711. 

 10. pusilla, p. 713. 



U. Tellina tenella, p. 721. 



