CONTENTS. 



Lamellibranchiata, Part I. 



Page 



Introduction i 



Anomia 3 



— patelliformis L 4 



— sqnajmtla L 5 



[Osirea edulis L.] 11 



Pt'ctcu pitsi'o L II 



— opercularis L 13 



— islandictis M ull 15 



— aratus Gmel 19 



— scptemradiattis M ii 1 1 20 



— tigrmiis W ii 1 1 22 



— striatus Mull 24 



— imhrifer Lo v 25 



— vitreiis C h e 111 n 27 



— simtlis Lask 29 



— groenlandicits Sow 30 



— frigidtcs Jensen 33 



— 2indatus Verr. & Smith 37 



— maxintiis L 37 



Atmtsshim luciduni J ef f r 37 



Lima loscotnbii Sow 3^ 



— excavata F a b r 39 



— gwyni Sykes 4° 



— hyperborea Jensen 41 



— subauriculata Mont 42 



— similis n. s p. 44 



— subovata Jeffr 44 



— ingolfiana n. s p 45 



— j^ff'"'^}'^' Fisch 45 



Page 



Lima sarsii L o v 46 



Mytilus fdnlis L 47 



Modiola modiolus L 48 



— phaseolina Phil 51 



Dacrydium -ritreicm Moll 53 



Idas argtntftis Jeffr 5^ 



Modiolaria 57 



— discors L 57 



— corrugata S t p s 62 



— nigra Gray 63 



— f aba V ah r 66 



CreneUa decussata Mont 68 



Cardium echinatiim L, 71 



— [edule L.] 73 



— minimum P h 74 



— fasciatum Mont 75 



— \nodosum Turt] 79 



— ciliatum Fabr. 79 



— elegantulujti Moll 84 



— \norvegicutn S p g 1.] 85 



— groenlandicum Ch 85 



\Isocardia cor L.] 89 



Cyprina islandica I, 89 



Astarte borealis C h. 92 



— Montagui D i 1 1 w 97 



— sulcata D. C 105 



— elliptica Brown 108 



— crenata Gray 113 



41873 





