368 WATSON : MARINE MOLLUSCA OF MADEIRA. 



bound, and when at work one was constantly liable to be 

 caught by a heavier wave than usual, such as actually surprised 

 a friend of my own — rolled him over and over among the rocks 

 and, washing him out to sea, scarce parted with him alive. 



While these are the difficulties of the shore, the constant 

 heavy swell of the Atlantic all round the coast makes dredging 

 always disagreeable and arduous, often impossible. Thus my 

 dredge was on one occasion away for many months on the stormy 

 north-coast waiting for weather in which the boatmen could go 

 to work, and in this case the delay proved the more vexatious 

 as the dredgings when sent to me at last proved to be torrent 

 sand, carried from the land far out to sea, but blank. The 

 nature of the bottom, too, always proved very dangerous, and 

 from some unexplained cause the dredge often came up empty. 



Then, besides all this, one has to deal with boatmen utterly 

 untrained in dredging work — always, in at least the matter of 

 truth speaking, reckless — often quite impracticable, holding as 

 they did that one who employed them on such work was a 

 madman — impervious alike to money and to good words — and 

 even at the best requiring an amount of time, patience, and 

 command of the language, not at the disposal of every one. 



Before giving the list of my own collection, as I hope to 

 do later on, I may offer some remarks on Mr. McAndrew's list 

 and on that of Senhor Nobre. 



Mr. Mc Andrew names for Madeira 127 species — adding 

 unnamed 29 more, or 156 in all. Of these species got at 

 Madeira and of such as he collected at the Canary Islands, 

 Mr. McAndrew presented many specimens to the British 

 Museum, and his own complete collection he left to Cambridge 

 University. Unfortunately Mr. McAndrew did not keep apart 

 his dredgings from different places, but both in the British 

 Museum and at Cambridge there are notes of locality on the 

 labels of different specimens which supply most valuable in- 

 formation. At the British Museum Dr. Gunther obligingly 

 gave me full access to the specimens and allowed me to have 



J.C., vi., July, 1891. 



