1882.] 0. F. von Mollendovff — On a collection of Japanese Clausilise. 9 



var. MiisroE, v. Moll. Differt a typo testa minore, graciliore, peristo- 

 mate vix incrassato, lamella suhcolumellari immersd vel vice emersd — mav' 

 ginem haud attingente. 



Alt. 8f— 11 miUim. 



Hab. Nara. 



The differences above mentioned excepted, this dwarf variety agrees 

 very well with the type, especially in the orange-brown colour. 



18. Clausilia bilabeata. 



1876. Clausilia bilabrata, E. Smith, Quart. J. of Concliol., Febr. p. 120. 



1877. . Bottg-er, Glaus. Stud. p. 68. 



1878. _ Syst. Verz. p. 38. 



" Jahrb. D. M. G. v, p. 103, t. iv, f. 6. 



1879. Kobelt, Fauna. Jap. p. 96, t. ix, f. 12. 



Hab. Kobi. 



7. Subgroup of Clausilia hyperoUa, v. Mart. 



19. Clausilia htperolia. 



1877. Clausilia htjjperolia, E. von Martens, Sitz. Ber. Ges. ISTat. Fr. 17 April, 



p. 110 



Bottger, Glaus. Stud. p. 69 



1878. Syst. Yerz. p. 58. 



1879. Kobelt, Fauna Jap. p. 99, t. ix, f. 13. 



Two specimens collected by Mr. Hungerford near Jotsuka, I think I 

 can safel}^ identify with E. von Martens' species, although I have seen but 

 one not quite full grown specimen of the latter. Diagnosis and figure 

 agree wery well. 



20. Clausilia eectaluita, n. sp., PI. I, Fig. 9. 



Testa fasiformis, solidida, suhpellueida, striatula, pallide cornea; 

 anfr. W^ idtimits penultimo subaequalis, irregulariter costulatus ; apertura 

 suhohliqua^ tetragono-piriformis, peristojna continuum, solutum, expansum^ 

 valde incrassatum, reflexiusculum. Lamella supera valida marginem attin- 

 gens cum spirali contigua^ infera antror sum fere ohsoleta, retrorsum suhver- 

 ticaliter ascendens, in margine peristomatis incrassata^ nodulifera ; lamella 

 suhcolumellaris valida emersa usque ad marginem producta^ fossuld ah 

 infera discrefa. Plica principalis obsoleta punctiformis cum lunelld recta 

 conjunct a, plica suturalis post lunellam una hrevissima, palatales nullae. 



Alt. 18' — 20, kt. 4, apert. long. 4, lat. 3 millim. 



Hab. Kamatokogiro. 



By its peculiar inner structure this remarkable shell can only be com- 

 pared with the last mentioned species, with which it has in common the 

 almost vertical and receding lower parietal lamella, the long and straight 

 2 



