658 RITTER V. FRAUENFELD ON NEW ViviPAR#. [Nov. 14, 
5. DescripTions or SevEN New Spectres or THE Genus Vivi- 
pARA, Linx. By Georce, Rirrer v. FRAVENFELD. 
When passing some time at London in the summer of 1865, I 
found among the last acquisitions from Africa and Eastern India, 
made by the late Mr. Hugh Cuming for his splendid collection, some 
new species of Paludina, which, with wonted kindness, the most 
regretted possessor entrusted to me for description and publication. 
These are— 
1. Vivrpara scLATERI. Testa obtuso-conica, olivacea, imper- 
forata, anfractibus quinque, modice convexis ; costis duabus 
paribus intervallis distantibus instructis, costa tertia sutu- 
rali; anfractibus ultimis supra angulum aperture superiorem 
obtusioribus ; apertura altitudine teste dimidio breviore, ovali, 
parum producta, intus cerulescente. 
Obs. From Japan, of ashape intermediate between V’. ingallsiana, 
Lea, and V. oxytropis, Bus. I have named this species in honour 
of Mr. P. L. Sclater, to whose kindness I owe so many obligations. 
2. VivipaRA SIAMENSIS. Testa depressa, solida, acute conica, 
late umbilicata, pallide olivacea, margine anfractuum superiore 
subalbescente, inferiore anfractus tertii et quarti purpureo- 
fusco, parum nitente; anfractibus quinque, valide convenis, 
subdivaricatis, sutura profunda ; apertura valide dextrorsum 
directa, magna, ampla, margine valide incrassato, intus alba ; 
anfractibus obscure et interrupte sptraliter striatis : operculo 
tenui, pallide fusco, nucleo excentrico. 
Obs. The only species with equally thickened peristoma is, as far 
as I know, V’. columna, a fossil form lately described by Von Martens. 
3. VivipARA HELICIFORMIS. Testa subglobosa, umbilico an- 
gusto profundo, saturate olivacea, parum nitente ; anfracti- 
bus quingue (?), parum convewis, sutura impressa; anfractu 
ultimo extra angulum aperture superiorem declinato, ceteris 
lineis punctatis subtilissime spiraliter striatis; apertura me- 
diocri, pyriformi, intus sordide cerulea, margine nigro nitido. 
Obs. From Central Africa; most nearly related to V. ethiops, 
Reeve. 
4. Vivrpara puncTaTa. Testa conica, tenui, umbilico magno 
amplo, olivacea, subtilissime flavo punctata ; anfractibus quin- 
que, subconvewis, supra subcostatis, lineis creberrimis undulatis 
obscure striatis, sutura impressa ; apertura modice ovalt, intus 
fuscescente, diaphana, maculis flavis extraneis intus opacis, 
margine, subtili, acuto, nigro marginato. 
Hab. Western Africa. 
5. VIviPpARA JEFFREYSII. Testa turbinata, subsolida, olivacea 
subnitente, anfractibus superis purpureo-pruinosis ; umbilico 
profundo, amplo ; anfractibus quinque et dimidio, ad suturam 
