odhner: marine mollusca of iceland. 31 



Explanation of the plate. 



All tlio figures, except Fig. 29, 30, 35, are in natural size. 

 Fig. 1 — 4. Littonna rudis from Berufjord, showing the variation in 



form, sculptm^e and colonr: tig. 3 shows a shell with 



operculum. 

 » 5. Admefc viridula, Berufjord. 



» (). Anomia eplnppium, riglit valve, from a Pecten, Arnanes. 



» 7 — 8. D:o, rar. cylindrica, from the inner and the upper 



side. Berufjord. 

 » 9. I):o, var. squamuJa. with an attached smaller speci- 



men, Arnanes. 

 » 10. I':o, intermediate form l)etween var. cjilindrka and 



squamula, Arnanes. 

 J^ela angulosa, Berufjord. 

 Thracia scptenfrionaH>i, left valve. from outside, Rau- 



farhofn. 

 D:o, right valve from inside. 



Thracia truncata, left valve, from outside, Berufjord. 

 D:o, right valve from inside. 

 Scalaria groenlandica: to the riglit a worn specimen. 



Raufarhofn. 

 Bda PingeUi^ Berufjord. 

 CeritUiopsis cosfulafa, Berufjord. 

 Bela dnerea, Berufjord. 

 Äcmcea testiidinalis, Berufjord, small speeimens, with 



the apex situated far anteriorly. 

 BeJa pi/ramidalis, Reykiavik. 

 Yoldia hi/pcrhorea, Berufjord. 

 Yoldia limatula, Arnanes. 

 Tectura riibeUa, Berufjord. 

 Xatica nana, Raufarhofn. 

 Tectura ruhella, forma rJeraia, Berufjord. 

 Margarita ohscura var. islandica, from apertnre and 



spire, Hofsos. X 2. 

 D:o, natural size. 

 Cf/prina islandica var. infläta. Thistilfjord, left valve 



from outside and from inside. 

 Tectura ruhella forma elevata, Berufjord. X 2. 

 Lunatia groenlandica, Berufjord. 

 I):o, Raufarhofn. 



Tryckt den 16 december 1910. 

 Uppsala 1910. Almqvist & Wiksells Bok(vyckeri-A.-B. 



