358 TEST ACE A ATLANTIC A. 



lunato-ovali ; peristomate acuto sed parum expanse et reflexo, 

 marginibus ad insertiones subconvergentibus sed separatis (vix 

 callo junctis), supero et basali subsequalitur arcuatis, hoc 

 simplici (nee intus sinuate subdentato). Diam. maj. 12 lin. 



Habitat Palmam ; in Barranoo de Herradura, necnon ad 

 Los Souces, a Revdo. R. T. Lowe (et recens et semifossilis) 

 detecta. 



Nine examples (two or three of which are subfossilized) of 

 this well-marked Helix were taken by Mr. Lowe in Palma, 

 namely at Los Souces, and in the Barranco de Herradura ; and it 

 is remarkable as being the only tolerably large species, with 

 the exception of the H. vermiplicata (and the clearly imported 

 H. aspersa, MiilL) which has hitherto been observed in that 

 island. Mousson's monograph does not enumerate a single 

 Palman representative of the great section Hemicycla ; never- 

 theless, seeing that Goinera is so rich in insular forms, we can 

 hardly suppose that Palma, with its superior elevation and 

 more extensive area, is deficient in them, but must merely 

 conclude that the smaller amount of research which has been 

 expended on it accounts for the fauna having been less in- 

 vestigated, 



The present Helix is rather thin in substance, and depresso- 

 globose in outline ; its ultimate whorl is a good deal developed, 

 rounded, and (except very obsoletely so posteriorly) unkeeled ; 

 its umbilicus is altogether closed over ; and its surface (which is 

 opake except in the central space below) is not only very 

 densely crowded with minute sand^like granules, but also con- 

 siderably malleated, the malleations however being so mixed 

 up (except towards the apex of the spire) with the very irre- 

 gular oblique plicafi that the two systems of sculpture seem to 

 be well-nigh completely blended together, or inseparable. In 

 colour it is of a rich brownish- or olivaceous-yellow (paler around 

 the axis beneath), and there are four or five darker and some- 

 what conspicuous bands, either one or two of which are below 

 the dorsal line, another (broader, and perhaps composed of two 

 confluent ones) immediately above it, and another (which is 

 more or less indented, or freckled, on its anterior margin) 

 behind the suture. 



Helix merita 

 Helix merita, Mouss., Faun. Mai. des Can. 174 (1872) 



Pfeiff., Man. HeL vii. 348 (1876) 

 Habitat Gromeram, semifossilis ; a Dom. Fritsch reperta. 

 The present species and the H. harmonica I have not been 

 able to inspect, and there seem to be but few characters about 

 them of a very striking or distinctive nature. They were both 



