JAPANESE MOLLUSKS, APPENDIX I. 155 



APPENDIX I. 



List of Land and Freshwater MoUusks collected in Japan by 

 Frederick Stearns. 



ENDODONTID^. 

 Pyramidula (Gonyodiscus) pauper Gld. Tokyo (Stearns). 



HELICID.S:. 



Two genera only of Helicidce occur in Japan : Eulota, repre- 

 sented by the sections Eulotella, Acusta, Euhadra, Pledotropis and 

 jEgista, and Ganesella represented by G. (Satsuma) japonica and 

 its allies. 



From alcoholic specimens collected by Mr. Stearns, the writer 

 has been enabled to figure the anatomy of Euhadra qucesita, peliom- 

 phala, brandti, etc., Pledotropis vulgivaga and Ganesella japonica 

 (Man. Conch. [2], IX), and to demonstrate the true relationships of 

 these forms hitherto unknown. By shell characters alone it is at 

 present impossible to classify many of the small Helices of Japan 

 and China. Their anatomy only can decide which species belong 

 to Ganesella, which to Eulota. Some large forms, such as Helix 

 largillierti, papilliformis and Stearnsii are of equally dubious affini- 

 ties. Altogether the Helix fauna is very closely allied to that of 

 middle and northern China, but is poorer in variety of types. The 

 Euhadra group is its most characteristic element. Cathaica, Pseud- 

 iherus and other Chinese Eulota sections are absent, as are Camcena 

 and Plectopylis; and 3Ioellendorffia, a group allied to Helicodonta 

 in shell features, but possibly belonging near Chloritis, is another 

 characteristic type of southern China wanting in Japan. 



Eulota similaris var. stimpsoni Pfr. Xemoto and Mera, Boshiu, Tokyo, Katsura, 

 Osaka (Stearns). 



Eulota sieboldiana Pfr. Kyoto (Gaines) : Mera, Boshiu, Yokohama, Tokyo (Stearns). 



Eulota laeta Gld. Hokkaido (Gaines). 



Eulota (Euhadra) luhuana Sowb. var. nimbosa Crosse. 



Arima (Gaines) ; Yokohama (Stearns). Bands, indifferently two 

 or three ; sometimes the dark bands cover the ground, except for 

 the light flames ; and this is the form I have called var. subatra. 

 Others occur at Yokohama without dark bands, but with the papery 

 streaks. 



