276 DR. L. PFEIFFER ON NEW LAND SHELLS. [Nov. 25, 



cornea ; sutura profunda ; anfr. vix ultra 4, convexi, ultimus 

 levissime capillaceo-striatus, perinjlatus, ad aperturam valde 

 constrictus, e strictura canalem mediocrem, in sutura retroce- 

 dentem emittens ; apertura verticalis, spira brevior, circularis ; 

 perist. album, continuum, breviter adnatum, anguste expansum, 

 margine dextro subduplicatum. Operc. planum, multispirum, 

 fulvum, nucleo rubro. 



Diam. maj. 7, min, 6;^, alt. 7| mill. 



Hab. Lao Mountains, Camboja (Mouhot^. 



30. Hybocystis mouhoti, Pfr. (PL XXXVI. fig. 13.) T. 

 subumbilicata, compresse pupcpformis, solida, striatula, saturate 

 fusco-violacea ; spira irregulariter oblonga ; anfr. 6, primi 4 

 convexiusculi, conum subregularem formantes, penultimus multo 

 longior, ultimus latere aperturce complanatus, turn profunde 

 descendens, foveolato-malleatus, antice arcuatim ascendens ; 

 apertura obliqua {basi axin excedens), angulato-ovalis, intus 

 purpurascenti-fusca ; perist. rufo-aurantiacum, incrassatum, 

 duplicatum et reflexum, margine parietali subhorizontali, dextro 

 ad unguium insertionis sursum producto. Operc. tesfaceum, 

 pagina interiore castaneo callosa. 



Long. 35, diam. 1 7 mill, 



Hab. Lao Mountains, Camboja (Mouhot'). 



31. Cyclophorus laomontanus, Pfr. (16«). T. mediocriter 

 umbilicata, depresso-turbinata, solidula, subtiliter striata, ni- 

 tidula, fulva, strigis fulguratis pallida rufis ornata, vel in f undo 

 pallido maculis et tceniis castanets dense variegata ; spira tur- 

 binata, vertice acuto, nigricante ; anfr. 5, convexi, ultimus teres; 

 apertura parum obliqua, sub circularis, superne obsolete sub- 

 angulata ; perist. continuum, breviter adnatum, ccsterum cequa- 

 liter et anguste expansiusculum. Operc. ? 



Diam. maj. 13, min. 11, alt. 9 mill. 



Hab. Lao Mountains, Camboja (Mouhot). 



This shell resembles C. cceloconus, Bens., but differs from it by 

 its more elevated spire, narrower umbilicus, and slightly expanded 

 peristome. 



32. Cyclophorus h^matomma, Pfr. (1076). T. umbilicata, 

 conoideo-depressa, solida, confertissime striata et superne liris 

 elevatis incequalibus crebris cincta, alabastrina ; spira parum 

 elevata, sursum fulvo-sanguinea, vertice subtili; anfr. 5,modice 

 convexi, ultimus subteres, subtus Icevigatus, crista funiformi, 

 umbilicum latiusculum limitante, munitus ; apertura obliqua, 

 irregulariter rotundato-ovalis ; perist. simplex, rectum, mar- 

 ginibus approximatis, callo brevi junctis, sinistra levius curvato, 

 ad cristam umbilicalem sinuato. 



Diam. maj. 23, min. 19, alt. 12 mill. 

 Hab. Ecuador. 



