5© 



f \ Extracted from the Linntean Society's Journal — Zoology, 



vol. xxvi.] 



Y 



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. Robert 



Boog Watson, LL.D., F.R.S.E., F.L.S. 



> 'w-s - ■ ' ■ , 

 [Read 6th May, 1897.] 



(Plates 19 & 20.) 



The species here described were chiefly obtained 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. 



In addition to these gatherings, I have carefully gone over the 

 Mollusca secured by Mr. J. Tate 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 

 sp°cies 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. 



List op new Species prom Madeira. 



LINN. JOURN. — ZOOLOGY, YOL. XXTI. 



18 



