136 
14. Hexirx Tristram, Pfr. TZ. late umbilicata, perdepressa, 
acute carinata, tenuis, oblique plicato-strata, opaca, sordide 
albida, corneo obsolete variegata; spira vir elevata; sutura 
carina leviter exserta marginata ; anfr. 5 planiusculi sensim 
accrescentes, ultimus infra carinam compressam, crenulatam 
convexus, antice non descendens ; apertura obliqua, subsecuri- 
formis ; perist. rectum, intus sublabiatum, margine supero an- 
trorsum arcuato. 
Diam. maj. 12, min. 104, alt. 4 mill. 
Hab. Interior of Tunis (Mr. Tristram). 
15. Hexix menpicaria, Pfr. T. mediocriter umbilicata, co- 
noideo-semiglobosa, solidula, striata et sub lente breviter pilosa, 
cornea ; spira conoidea, vertice subtili nitido ; anfr. 4% turgid, 
ultimus viz descendens ; apertura parum obliqua, lunato-sub- 
circularis; perist. simplex, rectum, marginibus convergentibus, 
columellari vix dilatato, non reflexo. 
Diam. maj. 8, min. 7, alt. 43 mill. 
Hab. Interior of Tunis (Mr. Tristram). 
16. Hexix (Nanrna) péuRniana, Pfr. T. perforata, depressa, 
suborbicularis, tenuiuscula, sublevigata, parum diaphana, lutes- 
centi-grisea; spira breviter conoidea, vertice minuto, obtuso ; 
anfr. 64 convewiusculi, regulariter accrescentes, ultimus non 
descendens, supra medium obsolete subangulatus, basi viz con- 
vexior, nitidior ; apertura fere verticalis, transverse lunaris ; 
perist. simplex, rectum, margine columellari declivi, levissime 
arcuato, ad perforationem reflexiusculo. 
Diam. maj. 314, min. 28, alt. 15 mill. 
Hab. Siam (Mr. Mouhot). 
17. Henrx (Nanrna) Mounoti, Pfr. (Pl. L. fig. 5.) TT. perfo- 
rata, orbiculato-depressa, tenuiuscula, minute costulato-striata 
et superne lineis spiralibus impressis decussata, superne pallide 
cinnamomea, basi nitida, corneo-albida ; spira convexa ; sutura 
rufulo-marginata ; anfr. 6 convexiusculi, lente accrescentes, 
ultimus non descendens, subtus convexior ; apertura obliqua, 
lunaris ; perist. simplex, rectum, margine columellari leviter 
arcuato, ad perforationem apertam triangulatim reflexo. 
Diam. maj. 26, min. 23, alt. 14 mill. 
Hab. Siam (Mr. Mouhot). 
18. Butrmus saturanus, Pfr. T. imperforata, subfusiformi- 
oblonga, solida, lilaceo-carnea, fusco-flammulata ; spira conica, 
apice acutiusculo, albo; anfr. 64, summi levigati, sequentes 
oblique striati, ultimus levior, rarioribus nonnullis latis nigri- 
cantibus munitus, spira paulo brevior, basi attenuatus ; colu- 
mella crassa, torta, nigra; apertura subverticalis, acuminato- 
oblonga; perist. nigrum, breviter reflecum, marginibus callo 
nigro junctis. 
Long. 76, diam. 33 mill. 
Hab. Pallatanga, Republic of Ecuador (Mr. Fraser). 
