1885.] 0. F. V. Mollendorff — Japanese Land and Freshwater Shells. G5 



lineam lateralem vix svperans, palatalis suj>era brevis divergens, infera 

 punctiformis, lunella brevis striata. Clausilium ? 



Long. 17f , diam. 3f, apert. long. 3|, lat. 2| mill. 



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



Another species of the same subgroup, at once distinguished by the 

 cylindraceous slender shell. 



(y) Subgroup of Cl. platydera, v. Mart. 



27. Clausilia plattauchen, v. Mart., Sitz. Ber. Ges. Naturf. Fr. 

 Berlin, 17th April, 1877, p. 110. Bottger, Glaus. Stud. p. 67. Kobelt, 

 Faun. Jap. t. IX, f. 8. Cl. fusangensis, v. MoUdff, 1. c. p. 8, t. I, f . 8. 



My friend Dr. Bottger has pointed out to me that my species is the 

 same as von Martens' previously published Cl. platyatwhen, of which I 

 had not seen a specimen, and which is not very accurately figured in 

 Kobelt's Fauna of Japan. I have since convinced myself that Dr. Bottger 

 is right. 



Dr. Anderson collected a small variety of the same species at 

 Chusinji which is only 23 — 25 mill, in length. 



(8) Subgroup of Cl. strictaluna, Bottg. 



28. Clausilia strictaluna, Bottg., var. nana, n. 



Differt a typo testa tnulto ^ninore, ventricosiorCj aperturd magis 

 rotundatd, lamella subcolumellari immersd. 



Long. 9 — 10, lat. 2f mill. 



Nagasaki (Hungerford). This dwarf form, although closely related 

 to 01. strictaluna, may ultimately be considered to be a separate species, 

 if a greater number of examples of both can be examined. 



29. Clausilia aurantiaca, Bottg., var. erberi, Bottg. 



My var. minor (1. c. p. 9) is the same as Bottger's var. erberi, as the 

 author has himself confirmed. 



30. Clausilia plicilabris, A. Adams, A. & M. N. H. 4th ser. X, 

 1868, p. 469. Pfeiffer, Mon. Hel. VIII, 1877, p. 476. 



This rare species has been found by Mr. F. W. Eastlake on his tour 

 to Nikko, and by Mr. B. Schmacker in the Hakoni mountains. 



(e) Subgroup of Cl. caryostoma, v. Molldff. 



31. Clausilia cartostoma, v. Molldff., 1. c. p. 6, t. I, f. 5. 



This interesting species is certainly a Hemiphaedusa. The " ven- 

 tral " position of the palatal plaits bring it near to the subgroup of Cl. 

 strictaluna, in which especially Cl. aurantiaca shows the same receding 

 position of the closing apparatus. My former remark that a lunella is 

 deficient has to be rectified, inasmuch as the punctiform plait between 

 the two ' palatales ' may very well be considered to be a short lunella. 

 9 



