91 
4. Descriptrions or Forty-sEvEN New Species or HELICEA, 
FROM THE COLLECTION oF H. Cumrne, Esa. 
By Dr. L. Prerrrer. 
(Mollusca, Pl. XX XI.) 
1. Hexrx cuamissor, Pfr. H. testa imperforata, sublenticu- 
lari, tenui, superne irregulariter plicata striisque concentricis 
sub lente decussata, parum nitida, pallide straminea; spira 
brevissime conoidea ; anfr. 45 vix convexiusculis, sensim accres- 
centibus, ultimo non descendente, medio carinato, basi sublevi- 
gato, lutescente; apertura vix obliqua, angulato-lunari; perist. 
simplice, recto, acuto. 
Diam. maj. 9, min. 72, alt. 4} mill. 
Hab. Sandwich Islands. 
2. Hexix nepos, Pfr. H. testa perforata, turbinato-depressa, 
tenui, levigata, nitidissima, pellucida, purpurascenti-fusca ; 
spira magis minusve conoideo-elevata, vertice subtili, acutius- 
culo ; sutura impressa; anfr. 5 convexiusculis, sensim accres- 
centibus, ultimo non descendente, basi modice convexo ; apertura 
subverticali, late lunari ; perist. simplice, recto, margine colu- 
mellari subverticali, calloso, superne anguste reflexo. 
Diam. mag. 8, min. 7, alt. 5 mill. 
Hab. Ceylon (Mr. Thwaites). 
3. Hewrx suprecta, Pfr. H. testa subobtecte perforata, conoi- 
dea, tenui, conferte striata, superne lineis impressis, spiralibus 
subgranulata, diaphana, pallide cornea ; spira conoidea, apice 
obtusa; anfr. 6 convexiusculis, sensim accrescentibus, ultimo 
non descendente, peripheria compresse carinato, basi convexo, 
sublevigato ; apertura obliqua, rotundato-lunari, subangulata, 
intus nitida ; perist. tenui, recto, marginibus vix convergenti- 
bus, basali arcuato, ad perforationem dilatato, subadnato. 
Diam. maj. 15, min. 133, alt. 9 mill. 
Hab. Salomon’s Islands. 
4. Hexix convextiuscuta, Pfr. H. testa perforata, globoso- 
turbinata, tenui, ruguloso-striata, pellucida, pallide cornea ; 
spira cornea, apice obtusula ; anfr. 54 modice convexis, sensim 
accrescentibus, ultimo non descendente, peripheria obtuse cart- 
nato, basi convexo; apertura obliqua, rotundato-lunari, intus 
submargaritacea; perist. simplice, recto, marginibus vix conver- 
gentibus, columellari superne brevissimo reflexo. 
Diam. maj. 12, min. 103, alt. 8} mill. 
Hab. Ceylon (Mr. Thwaites). 
5. Hexrx mozamsicensis, Pfr. H. testa perforata, trochiformi, 
tenuiuscula, confertim et oblique capillaceo-striata, sericea, 
fusco-fulva; spira conoidea, acutiuscula ; sutura submarginata; 
anfr. 5 convexiusculis, lente accrescentibus, ultimo medio carina 
