1. Buliminus Passamaianus 2. Buliminus Balfouri 3. Buliminus mirabilis, n. sp. 4. Buliminus Bentii, n. sp. 5. Buliminus rotundus, n. sp. 6. Buliminus socotorensis 7. Buliminus semicastaneus 8. Buliminus Balfouri 9. Buliminus hadibuensis 10. Buliminus fragilis 11. Buliminus fusiformis 12. Buliminus acutus, n. sp. 13. Buliminus innocens, n. sp. 13_a._ Buliminus Theodorae, n. sp. 14. Stenogyra socotrana 15. Stenogyra enodis 16. Stenogyra insculpta, n. sp. 17. Stenogyra decipiens, n. sp. 18. Stenogyra Jessica 19. Stenogyra adonensis 20. Ennea cylindracea, n. sp. 21. Succinea sp. 22. Otopoma Balfouri 23. Otopoma complanatum 24. Otopoma clathratulum 25. Otopoma conicum 26. Tropidophora socotrana 27. Lithidion marmorosum 28. Lithidion Bentii, n. sp. 29. Cyclotopsis radiolata 30. Auricula socotrensis, n. sp. B. Freshwater Species 31. Melania tuberculata 32. Planorbis sp. 33. Planorbis sp. III We bought in Aden a fragment of alabasteroid limestone, said to have come from the Hadhramout. It is broken on all sides. It is part of a perpendicular series of sunken square fields, on each of which is represented in flat relief a sitting or lying goat or chamois with enormous horns. My fragment has two complete goats and parts of another above as well as below. The goats look to the right, and there are some cuttings which may have been part of an inscription on the surface of the stone to the right of the column of goats. The squares are 4 inches high by 31/2 inches wide--10 centimetres by about 9. [Illustration: FRAGMENT OF ALABASTEROID LIMESTONE] That these goats must have some significance is clear from their likeness to the following objects in the Hof Museum at Vienna, and figured in 'Sued Arabische Alterthuemer,' by Prof. Dr. D. H. Mueller. The first is the lower part of a slab, complete on three sides with a plain surface down the middle, and columns of goats in squares just like that described above, on either side, the goat facing inwards. In neither of these cases can one know how many goats were originally represented. The second is an architectural fragment composed of alabasteroid limestone (yellowish in colour), 0.120 centimetres high, 0.202 long, 0.15 thick (so far as it remains). [Illustration:] It represents seven chamois (or goats) lying in a row. The heads are coarsely formed, the eyes like knobs, and the bodies of the two animals which are outside are indicated in profile. The original use of the object is uncertain, but, in any case, it must have been a topmost ornament, for the under-side, though regularly smoothed, is not polished like the other surfaces, and therefore cannot have been meant to be seen.