JAPANESE MOLLUSKS, APPENDIX I. 155 



APPENDIX I. 



List of Land and Freshwater Mqllusks collected in Japan by- 

 Frederick Stearns. 



ENDODONTIDJE. 



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



HELICIDJB. 



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

 sented by the sections Eulotella, Acusta, Euhadra, Plectotropis 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., Plectotropis 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- 

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

 and Plectopylis ; and Moellendorffia, 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. Nemoto 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 twa 

 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. 



