44 Mr. R. T. Lowe on a new Madeiran Helix. 



licus, and some other peculiarities of sculpture, H. delphinuloides 

 is allied to H. Delphinula, it is a truly distinct species ; and the 

 fact that one so large and remarkable has remained so long un- 

 discovered in Madeira only gives, as before observed, fresh vigour 

 to the hope that the real H Delphinula, in a living state, will 

 even yet reward the diligent researches of some explorer of the 

 more retired glens and interior recesses of that apparently in- 

 exhaustible and wondrous field, the inner ravine and mountain 

 region of Madeira. The locality of the present nearly connected 

 species suggests the probability that, like so many others of the 

 Canical fossil shells, H Delphinula also was a sylvan species, 

 and that it is consequently to be looked for in the higher forest 

 regions of the island. 



Group Coronaria, Lowe. 



Helix delphinuloides, Lowe. Plate III. figs. 1-3. 



T. latissime et perspective umbilicata, orbiculato-discoidea, tenui- 

 uscula, subpellucida, pallide testaceo-carnea v. livido-purpurascens, 

 ssepe subcretaceo-plumbea v. griseo-violascens albida, junior acute 

 dentato-carinata, supra concinne crenatim radiato-plicatula et ssepe 

 undatim oblique flexuoso-striolata, subtus spiraliter sulcato-costata 

 eleganterque clathrato-cancellata ; spira convexo-depressa, plani- 

 uscula; anfract. 6-6|, planatis (nee contabulatis), ad suturam 

 denticulato-marginatam antice impressam sequaliter radiato-plici- 

 feris, ultimo (aliquando subbicarinato) cylindrico (carina antice 

 evanescente) costis spiralibus pluribus distinctis (unica supra, 

 4 v. 5 infra carinam majoribus) sulcato-cingulato costellisque 

 annularibus striolisque intermediis creberrimis tenuissimis trans- 

 versis exquisite decussato-cancellato, antice valde deflexo soluto 

 producto; umbilico omnino aperto, patulo, largo, profundo, ad 

 apicem usque pervio, spirali; apertura relevata, expanso-tubee- 

 formi, insequaliter subcirculari ; peristomate circinato-producto, 

 undique relevato-disjuncto, expanso-reflexo, margine tenui, acuto, 

 subflexuoso-plicato, intus ineequaliter subsulcato. 

 Diam. maj. 15-17, min. 13-14, alt. 6-9 mill.; anfr. 6-6% mill. 

 Hab. ad terram inter gramina et herbas in declivibus dumosis ad 

 basin rupium convallis Ribeiro do Fayal dictae Maderse ad alt. 

 4000 fere ped. 



Animal a true Helix: yellowish brown; sides of foot pale 

 cinereous ; the whole with a warm pale sienna tint. Tentacles, 

 and a line backwards from the base of each, blackish ; the upper 

 pair rather long. 



Averse to move, but not slow or timid when once in motion. 

 When quiescent, the pointed yellowish-brown tip of the foot 

 appears within the mouth of the shell ; but when disturbed, the 

 animal retracts itself far back within. When brought down to 

 Funchal, the animals all died in three or four days. 



