CAN AM AN GROUP. 337 



nubigena (as will at once be seen by comparing them with my 

 remarks given above) ; and I am totally unable to conclude, 

 from such material, that they represent so much as even a 

 4 variety ' of the Teneriffan type. Yet, singularly enough, he 

 does not attempt to point out in what they differ from the 

 latter, but contents himself with observing (which is of course 

 self-evident) that they cannot be referred to either the H. 

 leprosa, the lanosa, or the hispidula! 



The H. pavida may be looked upon as the Canarian repre- 

 sentative of the H. Armitageana, Lowe, of the highest eleva- 

 tions of Madeira ; though that species (which is almost equally 

 fragile, and of a similar olivaceo-comeous hue) is considerably 

 larger and a little less flattened, and has a somewhat smaller 

 umbilicus, its surface is beset with coarse elongate-subtriangular, 

 file-like filaments (instead of infinitesimal abbreviated bristles), 

 its peristome (although acute) is more developed and recurved, 

 and there are usually obscure indications of two indistinct, 

 narrow, reddish-brown bands. 



(§ Gonostoma, Held.) 

 Helix crispo-lanata, n. sp. 



T. umbilicata, lenticularis, parum acute carinata, tenuis, 

 opaca, dense et grosse plicatulo-striata et pilis longissimis sub- 

 crispatis cinereis ubique (sed prsesertim in regione dorsali) 

 vestita ; spira depressa ; anfractibus 5, celeriter crescentibus, 

 ultimo supra ad carinam (in spira, mox supra suturam con- 

 tinuam) obsolete compresso, subtus convexo ; apertura obliqua, 

 peristomate acuto, marginibus late separatis et lamina subnulla 

 junctis, columellari umbilicum (profundum et subito, sed haud 

 angulation, excavatum) non attingente. — Diam. maj. lin. 4 ; 

 alt. H. 



Obs. — Species, sculptura, grosse plicato-striata et forma, de- 

 pressa carinata, cum H. fortunata, Shuttl., congruens ; tamen 

 multo minor, umbilico angustiore, et ubique pilis crispatis lon- 

 gissimis vestita. Ab H. hispidula, Lam., differt spira, depres- 

 siore, umbilico paulum maj ore, necnon testa, grossius striata 

 pilisque multo longioribus ac rudioribus induta. 



Habitat Palmam ; exemplar unicum, Maio exeunte 1858, in 

 Barranco de Gralga repertum. 



A single example (not quite mature as regards its peristome) 

 of this very remarkable Helix was taken by Mr. Lowe's servant, 

 Antonio Eodrigues, on the 21st of May, 1858, in the Barranco 

 de Galga, in Palma ; and there cannot be a question that it 

 represents a truly distinct member of the Gonostoma section, — 

 partaking in some measure of the characters both of the H. 



c c 2 



