106 Mr. R. M<^ Andrew on the MoUusca observed during a 



M arginella glabella and 1 are common in Lancerote and Grand Ca- 

 Conus mediterraneus ■ J nary, but were not observed in the more 

 westerly island of Teneriffe. 



Of land and freshwater shells fifty-seven are enumerated in the 

 work already referred to ; — of these I did not procure above half; 

 they are generally of a peculiar and interesting character. 



Of Viti'ina I believe there are two species ; one of them, the 

 smaller, found under stones in dry situations; the other I met 

 with living in moist wood of laurel-trees not far from Laguna. 

 An adult specimen of the animal measured fully li inch in 

 length when living. In the same locality I found dead a very 

 thin, pellucid shell of a green colour, and carinated like a Cara- 

 colla. It differs from any that I am acquainted with. 



On our way from Teneriffe to Madeira we landed for some 

 hours on the Great Salvage, an island of about a mile in extent 

 in either direction, uninhabited, except for a few weeks in the 

 year, when it is visited for the collection of barilla, feathers, &c. 



We found upon it a few goats, and rabbits in vast abundance, 

 so that our people were able to catch some in their hands ; also 

 sea fowl, which quietly allowed themselves to be taken from under 

 the ledges of rock, and innumerable lizards. After diligent search 

 I could only find one species of land moUusk, a snail allied to 

 Helix pisana, but apparently distinct from it. On the rocks of 

 the shore were Littorina striata, three or four species of Patella, 

 and a Trochus, all of large size, and in great abundance. 



16th May. — Arrived at Madeira : dredged three times in 

 Funchal roads and once in the bay of Porto Santo : obtained 

 Species. 



