4 O. F. voii Mollendorff — On a collection of Japanese Clausilige. [No. 1, 



An Claiisilia japonica, Crosse (Journ. de Conch. XIX, 1871, p. 228, t. 

 XIII, f. 5) ? 



I am by no means sure of the correctness of the identification of 

 Clausilia Xohensis, Smith, with japonica, Crosse, as proposed by Bottger and 

 Kobelt. Crosse's diagnosis is very vague and incomplete, and I have 

 seen neither figures nor specimens of the tvxxQ japonic a. On the other hand, 

 there is no doubt that Kobelt's nipponensis and Kobensis, Smith, belong to 

 one and the same species, and that Smith's name has the priority. 



Mr. Hungerford collected numerous specimens of the type at Kobi, 

 the original habitat, and near Koma Kasunga. A much smaller form from 

 Suma Yushi, I propose to distinguish as 



var. PALLENS, nova. 

 differt a typo testa minor e — 23 millim long a — tenuiore pallide flavescenti- 

 corned, lamella inferd magis elevatd, superae in profundo magis approxi- 

 matd. 



7. -Clausilia oostoma, n. sp., PI. I, Fig. 2. 



Testa elongato-fasiformis, solidula, suhpellucida, striatula, corneo-fusca, 

 spir a gracilis apice ohtuso, anfr. 12 — 12|- suhplani, uUimus subdistortus 

 rotundatus ; apertura oviforynis, subrecta^ peristoma continuum, solutum, 

 exp>ansum, reflexiusculum, superne leviter sinuatum. Lamella supera mar'^ 

 ginalis, obliqua, cum spirali contigua, infera margineni liaud attingens, re- 

 trorsum valde elevata, s'piraliter torta,fere horizontalis, intus ultra lamel- 

 lam spiralem producta, lamella subcolumellaris emersa usqite ad margineni 

 protracta ; plica principalis mediocr is, palatalis supera brevis cum princi- 

 pali divergens, infera obsoleta vel nulla, lunella nulla. Clausilium latissi- 

 mum sicut precedentis speciei. 



Alt. 2bi, lat. 5i, apert. long. 6, lat. 4f millim. 



Hab. Only three specimens from Hakoni. 



A near relation to the preceding species, but sufficiently distinguished 

 by the more elongate shape, the thinner shell, the very regular oviform 

 aperture, the more valid and still more spirally twisted, nearly horizontal 

 lower parietal lamella, the much more divergent upper, and obsolete lower, 

 palatal plait. 



c. Group of CI. Yolcohamensis, Gtosse ^ Megalophaedusa, Bottg. (Clausilienstudien, 

 p. 62). 



8. Clausilia vasta. 



1877. Clausilia vasta, Bottger, Claus. Stud. p. 62. 



1878. Jahrb. D. M. G. v, p. 51, t. iii, f. 4. 



Syst. Verz. p. 56, 



1879. Kobelt, Fauna Jap. p. 82, t. viii, f. 15. 



Hab. Nagasaki. 



