, 7 t 
116 DR. L. PFEIFFER ON NEW CYCLOSTOMACEA. [ Mar. 25, 
perist. simplex, tenue, ante tubulum leviter incisum, undique vie 
expansiusculum. Operc. precedentis, angustius spiratum. 
Diam. maj. 274, min. 193, alt. 10 mill. Ap. diam. 82 mill. 
Hab. Camboja (M. Mouhot). 
«3. CycLorus TRAILLI, Pfr. (Pl. XII. fig. 4). 7. sublate umbi- 
licata, depresso-turbinata, solidula, Nerie confertis, subtus mi- 
noribus sculpta, carneo-albida, fusculo variegata et fascia | rufa 
infraperipherica notata ; spira breviter turbinata, acutiuscula ; 
anfr. 42, convexi, celeriter accrescentes, juxta suturam levigati, 
ultimus teres, antice vix descendens; apertura obliqua, sub- 
angulato-circularis ; perist. tenue, vix exnpansiusculum, ad anfr. 
contiguum subinterruptum. Operc. Cycloti subdiscoidei. 
Diam. maj. 14, min. 12, alt. 104 mill. 
Hab. Russel-Canda, Madras (Dr. Trail). 
4, CycLopHorus saTuRNvws, Pfr. (Pl. XII. fig. 6). 7. late um- 
bilicata, depresso-turbinata, solida, oblique striata et sub lente 
minutissime granulata, albida, fasciis et tenis variis rufo-fuscis 
ornata; spira breviter turbinata, vertice minuto, acutiusculo ; 
anfr. 54, rapide accrescentes, convexi, ultimus rotundatus, juxta 
umbilicum albus ; apertura obliqua, subcircularis, intus flaves- 
centi-albida; perist. albidum, latissimum, breviter adnatum, 
latere dextro fortiter revoluto, sinistro leviter retrorsum for- 
nicato, patente. Operc. sub-6-spiratum, saturate rufum. 
Diam. maj. 63, min. 51, alt. 32 mill. Apert. alt. 26, cum. perist. 
38 mill. 
Hab, Camboja (M. Mouhot). 
5. Lerropoma portet, Pfr. (Pl. XII. fig. 5). T. perforata, 
globoso-conica, tenuis, spiraliter conferte striata et liris sub 
6 distantibus subacutis cincta, albida, haud nitens, strigis 
Sulguratis fuscis picta; spira turbinata, acuta; anfr. 6, conveai, 
ultimus inflatus, infra medium fascia alba et altera fuscula 
signatus, circa umbilicum albus ; apertura parum obliqua, sub- 
eircularis, intus albida fusco marmorata; perist. duplex, ad 
anfractum contiguum haud interruptum, internum expansius- 
culum vix prominens, externum latere dextro late expansum et 
patens, sinistro angustissimum. 
Diam. maj. 184, min. 15, alt. 14 mill. 
Hab. Polillo Islands (Mr. Porte). 
6. CaATAULUS RECURVATUS, Pfr. (Pl. XII. fig. 2). 7. breviter et 
profunde rimata, ovato-turrita, solida, distincte subarcuato- 
striata, virenti-fulva; spira regulariter attenuata; sutura 
profunda, simplex; anfr. 7, summi rubescentes, 3 ultimi con- 
veri, ultimus antice subascendens, basi carina compressa antice 
dilatata munitus ; periomphalum angustum, costulato-striatum ; 
apertura subcircularis, ad basin interrupta et canali perlato 
