106 Mr, R. M^ Andrew on the Mollusca observed during a 



Marginella glabella and "1 are common in Lancerote and Grand Ca- 

 Conus mediterraneus J nary, but were not observed in the mofft i 

 westerly island of Teneriffe. aills^ 



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

 work already referred to ; — of these I did not procure above ^^.}i 

 they are generally of a peculiar and interesting character. , i,r>f-/A 



Of Vitrina 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 1^ 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 thei 

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



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

 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 » 



Gastrochsena 

 Saxicava . 

 Venerupis 

 Neaera . . . 

 Poromya . 

 Lyonsia . 

 Thracia . 

 Solecurtua 

 Tellina. . . 



Psammobia 

 ErviUia . . 

 Cytherea . . 

 Venus . . . . 

 Circe .... 

 Cardium . . 



Cardita . . 

 Lucina . . 



Species. 

 1 

 1 

 1 

 2 

 1 

 1 

 1 

 2 

 5 



1 

 1 

 2 

 2 

 1 

 5 



1 

 4 



arctica. , riiilB-jg 



irus. funilua 



costulata, cuspidata. iusiixirnddO 



granulata. i\\hmi\a'3i 



striata. ix-nUVi 



phaseolina. ibifsK 



candidus, coarctatus. i >ofrBr) 



depressa, distorta, donacilla, balaus4iJiitt/L 



and another. ?h^n'^ 



costulata. .^ uoioDna 



castanea. , GSSfiTI 



chione, and one undescribed. , uih-^nRV 

 verrucosa and casina. 

 minima, 

 echinatum, rusticum, papillosum, leevi- 



gatum, and another ? 

 calyculata. ; 



spinifera, divaricata, pecten, and another. 



