S. L LIBRARY RHA MAGS EX LIBRIS William Hedley Dall: oleh Division of Mollusks " Sectional Library aa TE ¥ re i Li hy, Se Ricks ( 4 iv nee hy ) y ENN HSON/4y APR 24 1957 LIBRARY ye a6. ie Ob 844+ | Batracted from the Linnean Soctery’s JouRNAL—Zooroey,, Viol}. vol. xxvi.] feed Lee G/a On the Marine Mollusca of Madeira " with Descriptions of ~~~ Thirty-five new Species, and an Index-List of all the known Sea-dwelling Species of that Island. By the Rev. Rogrerr Booe Watson, LL.D., F.R.S.E., F.1.S8. . om [Read 6th May, 1897.] (Pratrs 19 & 20.) TueE species here described were chiefly obtamed in dredgings which I carried on in Madeira between 1864 and 1874. Much additional material was sent me by my lamented friend the late T. Vernon Wollaston, as executor of the Rev. R. T. Lowe, who dredged and collected from 1826 to 1872, when, with all his treasures of botanical research, he was lost in the Bay of Biscay. Some wreckage on the French coast from the s.s. ‘ Liberia,’ in which Mr. Lowe had sailed for Madeira, was the only record of all on board. Tn addition to these gatherings, I have carefully gone over the Mollusca secured by Mr. J. Yate Johnson in his 30 years’ study of the various forms of life both in the deeper and shallower waters of the Madeiran sea. It is to his collection that I owe the Coralliophaga, which is by far the most important of all the species presented here. The entire list, including the: 35 new species which follow, extends to 382 species. When not otherwise mentioned, the species here given have been collected by myself; I have been careful to note the fact when this has not been the case. = Bae SECTION List OF NEW SPECIES FROM MaDREIRA. 1. Cylichna spreta. 19. Scalaria Fischert, 2. Amphisphyra flava. 20. Smithia. 3. Philine complanata, 21, Aclis vitrea. 4. trachyostraca. 22 trilineata. 5. desmotis. 23. tricarinata. 6. Doridium laurentianum. 24, Eulima fulva. 7. maderense, 25. sordida. 8. Pleurobranchus Dautzenbergi. 26. badia, 9, —— Lowet. 27. rhaphium. 10. Nassa antiquata. 28. trunca. 11. Murex (Ocinebra) medicago. 29. —— inconspicua. 12. Trophon Lowet. 30. Odostomia omphaloessa, 13. Bittium depauperatum. 3l (Turbonilia) undata, 14. incile. 32. Schismope depressa. 15. Caecum atlantidis. 33. Montacuta triangularis. 16, Natica (Nacca) furva, 34, Coralliophaga Johnsoni, 17. Scalaria rhips. 35. Teredo Dallit. 18. aspera. LINN. JOURN.—ZOOLOGY, VOL. XXVI. 18 Division ‘ bo vs wes REV. R. B. WATSON ON THE Fam. ScaPHANDRIDE. Gen. CyticHna, Lov. 1.* CYLICHNA SPRETA, 0. sp. Shell smallish, oval, somewhat broad just below the middle and contracted upwards, truncated above, where the edge is carinated and thickened but not furrowed. Longitudinals: the lines of growth are very faint, delicate, close-set, and hair-like. Spirals: there are very slight and superficial microscopic scratches which extend to the whole surface. Colour dull pellucid white. Mouth club-shaped, bent, narrow above, widened but drawn out and lop-sided in front. Outer lip rising from the outer edge of the apex, bends back, and with a shghtly patulous front makes a minute semicircular sweep round the top, whence with a slight divergence in its direction to the right it runs straight forward, with a barely retreating edge, till it nears the point of the shell, where scarcely patulous it sweeps round and merges with a very faint twist into the point of the pillar, continued up the body as a mere film to its junction with the outer lip.