108 GASTROCOPTA, EASTERN ASIA. 



Japan: Misaki, Sagami (type loc., Hilgendorf ) ; Miyake- 

 jima, Izu; Chichi- jima, Ogasawara (Bonin) Islands; Yoron- 

 jima, Okinoerabu-shima, Kume-jima, Kunchan, Yaeyama, in 

 the Luchu arc (Hirase). Korea: Soeul and Hatong (Dr. 

 Gottsche). China: Dshi-nan-fu, Prov. Shan-dung (Moltner) ; 

 Shanghai (Heude, Schmacker) ; Ning-kuo-fu, Prov. An-hui 

 (Heude, for P. monas) ; Prov. Hunan (Fuchs) ; Dshie-dshow 

 and Tshing-yuan, Prov. Gansu (v. Mlldff.) 



Pupa (LeucochUa?) armigerella BEINHARDT, Sitzungsber. 

 Ges. Nat. Freunde Berlin, 1877, p. 96 ; Jahrbucher D. Malak. 

 Ges., iv, 1877, p. 323, pi. 11, f. 7. KOBELT, Fauna Japonica, 

 p. 62, pi. 1, f. 17. Pupa (Leucochilus) armigerella Reinh., 

 MOELLENDORFF, Jahrb. D. M. Ges. xi, 1884, p. 178 ; xiv, 1887, 

 p. 17. GREDLER, Mai. Bl. (n. F.), ix, p. 145. Leucochilus 

 armigerellum Reinh., MLLDFP., Annuaire du Mus. Zool. de 

 1'Acad. Imp. des Sci. de St.-Petersb. vi, 1902, p. 85. Pupa 

 atoma HEUDE, Notes sur les Moll. Terr, de la Vallee du Fleuve 

 Bleu, i, p. 77, pi. 18, f. 19 (quoted as "Pupa extrema Heude" 

 by Moellendorf, 1. c., p. 85). Pupa monas HEUDE, t. c. p. 78, 

 pi. 18, f. 18. Not P. monas Morelet lS79.Bifidaria armi- 

 gerella var. luchuana PILSBRY, Proc. A. N. S. Phila. 1901, p. 

 484, pi. 24, f. 54 (Kunchan, Okinawa). 



G. armigerella is intermediate between G. coreana and 

 G. hirasei, the first having simpler, the last more developed 

 apertural teeth. 



The parietal lamella is higher than the angular, and its 

 anterior end is completely concrescent with the latter, not 

 projecting on the columellar side, as in many American species. 

 The tooth as a whole is bilobed, being lower at the junction 

 of the two elements (fig. 11). The infraparietal is tuber- 

 cular. The columellar lamella is bent into a semicircular 

 shape, the inner end being turning down vertically, the outer 

 end horizontal (fig. 10) . The basal fold stands at the junction 

 of the basal and columellar margins, rather more upon the 

 columellar, as in Vertigopsis. The lower palatal plica is a 

 little lengthened, the others short. The size varies somewhat. 



Length 2.5, diam. above aperture 1.2 mm. (Miyakejima, 

 Izu). 



