. Bulletin of the Natural History Museum Zoology. 42 ALLEN, SANDERS AND F. HANNAH QS01 2634 322 50°'N 13°'W OS 30. 50<'N 13°'W WS01 2550 221 50°'N 13°'W ws 30. 50°'N 13°'W WS02 24S 287 50°'N 12°'W ws 30. 50°'N 12°'W CP10 4823 2 48°'N 15°'W CP 31. 48°'N 15°'W WS03 4829 1 48°'N 15°'W ws 1. (broken valve) 48°'N 15°'W WS07 4281 5 47°'N 9°'W ws 7. 47°'N 9°'W DS14 4254- 1 47°'N 9°'W DS 7. 4307 47°'N 9°'W OS06 4316- 2 46°'N 9°'W OS 9.
. Bulletin of the Natural History Museum Zoology. 42 ALLEN, SANDERS AND F. HANNAH QS01 2634 322 50°'N 13°'W OS 30. 50<'N 13°'W WS01 2550 221 50°'N 13°'W ws 30. 50°'N 13°'W WS02 24S 287 50°'N 12°'W ws 30. 50°'N 12°'W CP10 4823 2 48°'N 15°'W CP 31. 48°'N 15°'W WS03 4829 1 48°'N 15°'W ws 1. (broken valve) 48°'N 15°'W WS07 4281 5 47°'N 9°'W ws 7. 47°'N 9°'W DS14 4254- 1 47°'N 9°'W DS 7. 4307 47°'N 9°'W OS06 4316- 2 46°'N 9°'W OS 9. 4307 47°'N 9°'W DS16 4268 7 47°'N 9°'W DS 9. 47°'N QS07 4249 2 47°'N 9°'W OS 10. 47°'N 9°'W QS08 4327 1 47°'N 9°'W QS 11. 47°'N 9°'W NORTH AMERICA BASIN Atlantis II 62 2496 25 39°'N 70°'W ET 21. 12 64 2886 80 38°'N 70°'W ET 21. 72 2864 120 38°'N 71°'W ET 24. 73 1330- 1470 1 39°'N 70°'W ET 25. Chain 50 76 2862 53 39°'N 67°'W ET 29. 78 3828 3 38°'N 69°'W ET 30. 85 3834 32 37°'N 69°'W ET 5. 87 1102 17 39°'N 70°'W ET 6. Atlantis II 126 3806 14 39°'N 66°'W ET 24. 24 39°'N 66°'W Chain 106 334 4400 5 40°'N 40°'N 46°'W 46°'W ES 30. 335 3882- 3919 12 40°'N 46°'W ES 31. Knorr 35 340 3264- 95 38°'N 70°'W ES 3356 38°'N 70°'W We have examined the Verrill & Bush material housed in the National Museum. With the exception of specimen No. 49390, which is more inflated and slightly more inequilat- eral than is typical of specimens of Y. inconspicua and which is probably Y. frigida, the Verrill & Bush collection is correctly described. Waren (1989) synonymizes Y. inconspicua with Y. nana. We disagree with this view. Y. nana is essentially a high latitude species
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Keywords: ., bhlconsortium, bookcentury1900, bookcollectionbiodiversity, bookl
