5 
15. A. potrum, Pfr. (Pl. XXX. fig. 15.) A. testa perforata, 
ovato-conica, tenuiuscula, leviter striatula, parum nitente, pallide 
lutescente, fasciis et strigis angustis, fusculis variegata; spira 
conica, acutiuscula; sutura viv marginata; anfr. 6, convexis, 
ultimo spiram paulo superante, ventroso, basi subcompresso ; 
apertura obliqua, obauriformi, intus alba; plica columellari alta, 
dentiformt, alba ; perist. tenui, intus sublabiato, margine dextro 
anguste expanso, columellari dilatato, patente. 
Long. 17, diam. 10 mill. 
Hab. In insulis Sandwich (Dr. Newcomb). 
16. A. Forspestana, Pfr. (Pl. XXX. fig. 16.) A. testa sub- 
perforata, dextrorsa vel sinistrorsa, ovato-conica, solida, conferte 
striatula, nitida, grisea vel albida, fasciis crebris griseis vel 
Suscis, sepe confluentibus picta; spira exacte conica, sursum alba, 
apiculo nigro acutiusculo ; sutura marginata; anfr. 6, converxius- 
culis, ultimo spira paulo breviore, rotundato; apertura obliqua, 
obauriformi ; plica columellari supera, valida, nodiformi ; perist. 
Jusculo vel carneo limbato, margine externo breviter expanso, 
columellari crasso, subadnato. 
Long. 19, diam. 103 mill. 
Hab. In insulis Sandwich (Frick). 
Sect. Lamrnexra, Pfr. in Malak. Bl. 1854, p. 126. 
17. A. Rupts, Pfr. (Pl. XXX. fig. 17.) A. testa subimperfo- 
rata, ovato-turrita, solida, ruditer striata, fulvo-fusca; spira 
elevato-conica, acutiuscula ; suiura simplice, levissime crenulata ; 
anfr. 73, modice convevis, ultimo 2 longitudinis vix formante, 
rotundato ; apertura obliqua, sinuato-ovali ; plica columellari me- 
diana, lamineformi, subtransversa ; perist. simplice, recto, acuto, 
margine columellari dilatato, reflero, subadnato. 
Long. 21, diam. 113 mill. 
f. Castanea, fascia mediana et basi lutescentibus, spira minus 
elongata. 
Hab. In insulis Sandwich (Frick). 
18. A. Fustrormis, Pfr. (Pl. XXX. fig. 18.) A. testa imper- 
Fforata, fusiformi-oblonga, tenuiuscula, striatula, saturate fusca, 
pallide conspersa et oblique lineolata ; spira convexo-conica, apice 
nigra, acuta; sutura simplice ; anfr. 7, vie convexiusculis, ultimo 
2 longitudinis formante, basi attenuato ; apertura obliqua, ellip- 
soidea; plica columeilari levi, compressa, subduplicata; perist. 
simplice, recto, margine dextro regulariter arcuato, columellari 
anguste adnato. 
Long. 14, diam. 62 mill. 
Hab. In insulis Sandwich (Frick). 
Sect. ACHATINELLASTRUM, Pfr. in Malak. Bl. 1854, p. 133. 
19. A. napus, Pfr. (Pl. XXX. fig. 19.) A. testa imperforata, 
dextrorsa, turrita, solida, scrideel nitidula, albida, Sasciis griseo- 
carneis et interdum lineis castaneis cingulata ; spira elongato- 
conica, apice alba, acuia; sutura distincte marginata ; anfr. 64, 
