Plate II. 



Fig. i. Pecten imbrifer Loven var. major Leclie, the left valve. 



a. A specimen with few, distant rows of very small outgrowths, x i 1 ■'_,. East Greenland 

 (Forsblads Fjord), 50—90 fm. 



b. A specimen with many rows of outgrowths, x V/ 2 . East Greenland (Forsblads Fjord), 

 50—90 fm. 



c. A specimen with larger and fewer, rather vaulted outgrowths, x i 1 ,. East Greenland 

 (Forsblads Fjord), 50 — 90 fm. 



d. Almost all the vesicular outgrowths are broken off. x i 1 > S. of Jan Mayen, 86 fm. 



e. The vesicles are so broad and flat, that they almost meet one another, x i'' 2 . East Green- 

 land (Forsblads Fjord), 50 — 90 fm. 



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

 that only remnants of them remain as sharp combs (var. lamellosa Posselt). x 2. West 

 Greenland {72°^ 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 imbrifer Loven var. n. mi nor, the left valve. 



a. A shell in which the very small outgrowths mainly appear only towards the margin, x 2. 

 S. W. of Iceland, 485 fm. (Ingolf St. 81). 



b. A specimen almost quite smooth, x 2 1 2 . S. of Iceland, 500 fm. 



3. Amussium lucidum Jeffreys. 



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 gwyni Sykes. 



a & b. A specimen from Norway (Bergen), x i 1 /,. 



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



— 5. Lima liypcrborea Jensen. 



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

 c & d. The same specimen seen from in front and from above, x i 1 _,. 

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



— 6. Lima subauriculata 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 mil is n. sp. 



a & b. A specimen from the Bay of Biscay, 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 Strait, 1435 fm. (Ingolf St. 36). x 4. 

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



— 9. Lima ingolfiana n. sp. 



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

 1). 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. Lima feffreysi 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. 

 11. /. 1)1/1/ sarsii Lov en. 



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



c. The upper part of the shell seen from the 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. 



