64 MOLLUSCA. 
Hetix niripiuscuia (Sowerby). 
Testa anguste umbilicata, depresso-globosa, striata et punctulata, flavrda, 
superneé lineis tribus rufis circumdata: sptra anfractibus senis con- 
verts ; ultimo basi subinflato : apertura subcircularis ; labro simpler ; 
columella subdilatata, umbilicum haud occultante. 
Helix nitidiuscula, Sowrrsy; Zoolog. Journ., 1. 57, pl. 3, f. 4. 
Lowe; Faun. Mader., 52, pl. 6, f. 6, &c. 
AwnimaL with the body elongated, short, and pointed. ‘Tentacles 
dark umber, with a dark line on the neck behind them; the superior 
ones very long and taper. Colour of the upper part of the body bright 
umber, fading into fawn-colour towards the foot, where it has a shght 
tinge of green; back of head and neck marked by four rows of inter- 
rupted black lines; no furrow on the neck. The whole body sub- 
diaphanous. [1. P. c.] 
Obtained in Arum fields in the valley of the Courral, Madeira. 
He ix cutosa (Gould). 
Testa globulosa, crassa, rudis, sub-perforata, obsolete carinata, pallidé 
castanea, colore saturatiort nubilata, et interdum fasciata: spira an- 
fractibus sex rotundatis, striatis ; ultimo amplissimo, et obsolete cos- 
tato-carinato ; sutura profunda : apertura magna, rotundata, fauce 
livida; labro modicé reflexo, albido, propé columellam dilatato, umbih- 
cum rimatum tegente. 
Helix gulosa, Gourp; Proceed. Boston Soc. Nat. Hist., it. 165. 
Aug. 1846. Expedition Shells, 17. 
Anima throughout a deep sage-green, paler towards the edges; 
surface coarsely granulated. When in motion, instead of the usual 
gliding motion of the Helices, the mollusk of this shell flexes the foot 
