1865. | DR. L. PFEIFFER ON NEW LAND-SHELLS. 831 
columellaris ad marginem emersa ; perist. continuum, undique 
breviter expansum. 
Long. 15-16, diam. 32 mill. 
B. Peristomate extus intusque albo-incrassato, inde apertura 
coarctata, lamella inferiore et plica columellari vir conspicuis. 
13. PrrrocycLos witsont, Pfr. (Pl. XLVI. fig. 12). 7. late 
umbilicata, subdiscoidea, solidula, striatula, nitida, Sulva, cas- 
taneo dense fulgurata; spira medio vix elevata; anfr.43, modice 
convexi, ultimus subdepresso-rotundatus, medio linea castanea 
cinctus ; apertura diagonalis, subcircularis, intus violacescens ; 
perist. duplex ; internum expansiusculum, adnatum, superne vix 
incisum, externum patens, ad anfractum contiguum productum, 
tum late inflecum, latere dextro angustius involutum. Opere.? 
Diam. maj. 22, min. 18, alt. 73 mill, 
DESCRIPTION OF PLATE XLVI. 
Fig. 1. Bulimus incertus. Fig. 7. Helix formosensis. 
2, 2a. swinhoet. bacea. 
3. spheroconus. 9. vesta. 
4. Helix mellea. 10. granti. 
oS: shermani. 11. Clausilia swinhoet. 
6. —— swinhoei. 12. Pterocyclos wilsoni. 
16. Descriptions or Five New Species or LAanv-SHELLs, 
FROM THE COLLECTION OF THE LATE HuGHu Cuming. By 
Dr. Louis Pretrrerr. 
1. Burrus avris, Pfr. 7. profunde compresso-umbilicata, 
ovato-turrita, solidula, levigata, alba, strigis parcis undulatis 
castaneis signata ; spira turrita, acutiuscula 3 anfr. 6, convexi, 
ultimus spiram subequans, rotundatus, antice ascendens 3 aper- 
tura subverticalis, obverse auriformis, intus violaceo limbata ; 
columella profunde et valide transverse plicata, violacea ; 
perist. late expansum, marginibus approximatis, callo junctis, 
columellari flexuose elevato. 
Long. 39, diam. 143 mill. Apert. cum perist. 20 mill. longa, 
medio 13 lata. 
Hab. Venezuela. 
2. BuLimus Tenuruamris, Pfr. 7. profunde umbilicata, ovato- 
turrita, tenuis, sublevigata (sub lente minute spiraliter striata), 
nitida, alabastrina ; spira turrita, apice acuto; anfr. 7, plani- 
usculi, ultimus spira brevior, antice vix ascendens, basi com- 
presso-rotundatus ; apertura vix obliqua, truncato-oblonga ; 
perist. simplex, margine dextro breviter expanso, columellari 
ad basin usque perdilatato, patente, 
Long. 30, diam. 12 mill. Apert. cum perist. 143 mill. longa, 
10 lata. 
Hab. Venezuela. 
