1862.] DR. L. PFEIFFER ON NEW LAND SHELLS. 275 



datus ; apertura obliqua, ovalis ; perist. simplex, rectum, mar- 

 gine columellari sursum triangulatim dilatato, rejlexo, sub' 

 appresso. 



Long. 14|, diam. 8 mill. 



Hub. Lao Mountains, Camboja (Mouhot), 



26. Clausilia mouhoti, Pfr. (PI. XXXVI. fig. 5). T. subri- 

 mata, fusiformis, solidula, plicis filaribus confertis et striis 

 spiralibus arete reticulata, sericina, pallide fulvida, maculis et 

 sti'igis albis irregulariter picta ; spira a medio regulariter 

 attenuata, apice obtuso ; sutura rufo obsolete marginata, fas- 

 ciculis plicarum albat'um subcrenata; anfr. 12, convexiusculi, 

 summi unicolores pallidi, interdum truncati, ultimus angustior, 

 rotundatus, breviter solufus, vix descendens ; apertura fere 

 verticalis, subangidato-piriformis ; lamellce triangulares, fere 

 contiguoe ; lunella filaris, elongata, parum arcuata ; plica pala- 

 talis 1 supera, subcolumellaris juxta lamellam inferam emer- 

 gens ; perist. continuum, expansum et reflexiusculum, margine 

 externa superne subsinuato. 



Long, (integr.) 42, diam, 9 mill. 



Hab. Lao Mountains, Camboja (Mouhot^, 



27. Cyclotus granulatus, Pfr. (14 a). T. umbilicata, conoi- 

 deo-depressa, solida, undique dense et subruditer granulata, 

 opaca, albida, epidermide ad peripheriam latissime castaneo- 

 fasciata vestita ; spira parum elevata, vertice subtili ; anfr. 4^, 

 convexi, celeriter accrescentes, ultimus rotundatus, circa umbi- 

 licum mediocrem non eristatus ; apertura fere verticalis, sub- 

 circularis ; perist. simplex, rectum, obtusum, confinuufn, an- 



fractui contiguo breviter adnatum. Operc. planum^ marginibus 



anfractuum haud prominulis. 

 Diam. maj. 25, min. 20, alt. 14 mill, 

 Hab, Ecuador. 



28. Alyc^us mouhoti, Pfr. (PI. XXXVI. figs. 1, 2.) T. an- 



guste umbilicata, subpyramidalis, solidula, opaca, densissime 

 capillaceo- striata, cameo- albida ; spiraturbinata, apice obtusulo, 

 lutescens ; sutura profunda ; anfr, \^, convexi, ultimus irregu- 

 lariter infiatus, saccatus, 3 mill, pone aperturam subito con- 

 strictus, a strictura canalem longum, in sutura retrocedentem 

 emittens, turn sensim dilatatus et costulis nonnullis distantibus 

 munittts ; apertura obliqua, subcircularis ; perist. duplicatum, 

 internum continuum, breviter adnatum, externum fornicato- 

 reflexum, latere sinistra subangulatim dilatatum. 



Diam. maj. 7|, min. 65, alt. b\ mill. 



Hab. Lao Mountains, Camboja {Mouhot). 



29. Alyc^us (sect. Dioryx, Bens.) bacca, Pfr. (4 a). T. bre' 

 viter rimata, globaso-turbinata, sublcevigata, parum nitida, 

 cereo-albida ; spira regulariter turbinata, apice acutiusculo^ 



