64 0. F. V. Mollendorff — Japanese Land and Freslnvater Shells. [No. 1, 



22. Clausilia sublunellata, n. sp. 



Testa ventricosofusifo7'mis, tenuissime striatula, solidula, corneofusca, 

 anfr. 11 suhplani, superiores quattuo^- spiram cylindricani ohtusam effici- 

 entes, ceteri celeriter accrescenfes, dtio peniiltimi maximi, ultimus attenuatus 

 hasi rotundatus. Ajpertura elongata piriformis, sinulus rectus, peristoma 

 fere solutum, valde incrassatum, reflexiusculum. Lamella supera valida, 

 ohliqua, marginalis, intus triangular iter elevata, cum spirali continua, 

 iifera recedens, stricta, intus valida, suhcolumellaris immersa, oblique 

 intuenti intus conspicua. Plica pri7icipalis modica (lineam lateralem 

 superans), palatales duae, supera jprincipali suhparallela hrevis, infera 

 hrevissima, lunella hrevis, strictiuscula. Clausilium ? 



Long. 24, diam. 5, apert. long 6, lat. 4 mill. 



Hab. In montibus Mkko leg. cl. F. W. Eastlake. 



23. Clausilia sericina, v. Molldff. (1. c. p. 6, t. I, f. 4), whicli Mr. 

 Hungerford collected in the same region, and which I cannot compare at 

 present, will probably prove to be a near relation to 01. suhlunellata, and 

 undoubtedly belongs to the same subgroup. 



24. Clausilia subulina, v. Molldff, 1. c. p. 13. 



One specimen collected by Mr. F. W. Eastlake in the Nikko moun- 

 tains agrees perfectly with my diagnosis of the above species, of which 

 Mr. Hungerford possesses the only example found. It has the peculiar 

 arrangement of the palatal plaits in common with Gl. sublunellata, viz., 

 an upper palatal plait under the principalis, then a shorter one, and below 

 this a short straight lunella, which is, however, not so distinct. Gl. 

 suhulina is the only species of the subgroup in which the subcolumellar 

 lamella reaches the peristome. 



25. Clausilia micropeas, v. Molldff., 1. c. p. 12. 



The idea of classing this small form with Gl. gracilispira, mihi, in 

 the sub-section Gylindrophaedusa has to be given up entirely ; the lower 

 parietal lamella requiring its being placed in Semipliaedusa. I find, 

 further, that there is an indication of a lunella below the second (generally 

 punctiform) palatal plait. The species therefore fits very well into our 

 present subgroup, 



Mr. F. W. Eastlake collected a single specimen on his tour to 

 Nikko without noting a special locality. Lake Chusinji, where Mr. 

 Hungerford obtained the species, is not far from Mkko. 



26. Clausilia opeas, n. sp. 



Testa cylind.raceofusiformis, suhtiliter striatula, solidula, cornea, 

 anfr. \0\ planulati, ultimus rugosostriatus, apertura elongato-rotundata, 

 peristoma solutum, expansum, reflexiusculum, leviter incrassatum. La- 

 tnclla supera marginalis, modica, i^ifcra remota vix conspicua, intus valida, 

 suhcohtmcllaris i'nimcrsa oblique intiwnti conspicua. Plica priiicipalis 



