Plate II. 



Fig. I. Pectcn imhrifcr Loveii var. major Leche, the left valve. 



a. A specinieii with few, distant rows of very small outgrowths, x i' ,. East Greenland 

 (Forsblads Fjord), 50—90 fm. 



b. A specimen with many rows of outgrowths, x 172- East Greenland (Forsblads Fjord), 

 50—90 fm. 



c. A specimen with larger and fewer, rather vaulted outgrowths, x i'/,. East Greenland 

 (Forsblads Fjord), 50 — 90 fm. 



d. Almost all the vesicular outgrowths are broken off. x i"/2- S. of Jan Mayen, 86 fm. 



e. The vesicles are so broad and flat, that they almost meet one another, x I'/j. East Green- 

 land (Forsblads Fjord), 50 — 90 fm. 



f. Tlie vesicles are fused together to concentric wrinkles, which are in general broken, so 

 that only remnants of them remain as sharp combs (var. laincUosa Posse It), x 2. West 

 Greenland (72°4' N. L. 59°5o' W. L.), 227 fm. After Posselt. 



g. A part of the shell showing the pored outgrowths or vesicles, x 12. 

 h. A single pored vesicle, more magnified. 



i. A part of a shell, near the umbo, where the vesicles are rubbed off, so that the lines of 

 growth appear like cogs on a cog-wheel, x 5. 



— 2. Pecten ivibrifcr Loven var. n. minor, the left valve. 



a. A shell in which the verv small outgrowths mainlv appear onlv towards the margin, x 2. 

 S. W. of Iceland, 4S5 fm. '(Ingolf St. 81). 



b. A specimen almost quite smooth, x 2^/2. S. of Iceland, 500 fm. 



— 3. Amiissuim liicidiim Jeffre\s. 



a. A right valve from the outer side, x 2. Denmark Strait, 788 fm. (Ingolf St. 10). 



b. A left valve from the outer side, x 2. The same locality. 



c. The same valve as in fig. a, but seen from the inner side, x 2. 



— 4. Lima giuyjii Sykes. 



a & b. A specimen from Norway (Bergen), x I'/a- 



c. A part of the shell showing the serrate radiating ribs, x 30. 



— 5. Lima Iiypcrborca Jensen. 



a & b. A specimen from East Greenland (Forsblads Fjord), 90 — 50 fm. x I'/j. 

 c & d. The same specimen seen from in front and from above, x i'/'2- 

 e. A part of the shell showing the sharp radiating ribs, x 18. 



— 6. Lima sitbaiiriculata Montagu. 



a & b. A specimen from West Greenland (Ritenbenk). x 3. 

 c. A part of the shell showing the radiating ribs, x 20. 



— 7. Lima si/j/ilis n. sp. 



a & b. A specimen from the Bay of Bisca>', 250 — 790 fm. ("Thor", 1906), x 3. 

 c. A part of the shell showing the radiating ribs, x 20. 



— 8. Lima subovata Jeffreys. 



a & b. A specimen from Davis vStrait, 1435 fm. (Ingolf St. 36). x 4. 

 c. A part of the shell showing the numerous radiating ribs, x 20. 



— 9. Lima ingolfiaiia n. sp. 



a. A right valve from W. of Iceland, 568 fm. (Ingolf vSt. 90). x 4. 



b. A left valve from S. W. of Iceland, 799 fm. (Ingolf St. 78). x 4. 



c. The dorsal margin of the shell seen from the inner side, x ca. 18. 



d. A part of the shell showing its finely scaled or spined radiating ribs, x 30. 



— 10. Lii)ia Jeffrey si Fischer. 



a. A left valve from S. of Iceland, 500 fm. ("Thor", 1903). x 2. 



b. A right valve from S. of Iceland, 293 fm. ("Thor", 1903). x 2. 



c. A part of the shell showing its squamular, radiating ribs, x 12. 



— II. Lima sarsii Loven. 



a & b. A right and a left valve, from Norway (Bergen), x 5&.4. 



c. The upper part of the shell seen from tlie inner side, to show the crenulated cardinal 

 margin, x 30. 



d. A part of the shell showing its densely and coarsely scaled surface, x 30. 



