LOO CHOO MOLLUSK8. 175 



Potamides telesoopium Linn. Tryon, Man. Vol. 9, p. 161, pi. 33, fig. 56. 



Yaeyama. 2 small shells, 4 era. 



Potamides (Aphanistylus) sinensis Phil. Tryon, Man. Vol. 9, p. 164, pi. 34, fig. 

 97. Yaeyama Is. 



Cerithium morns Lam. var. rugosum Wood. Tryon, Man. Vol. 9, p. 134, pi. 24, fig. 

 47. 



Yaeyama. 1 shell. 



rithium (Liooerithum) 

 32. 



Yaeyama. 3 shells. 



€erithium (Liooerithum) piperitum Sby, Tryon, Man. Vol. 9, p. 144, pi. 27, fig. 

 32. 



VERMETID.S:. 

 Thylacodes dentiferus Lam. (?).* Yaeyama. 

 Petaloconchus sp. undet.* Loo Chools. 

 Siphonium maximum Sowb.* Yaeyama. 



LITTORINID.ffi:. 



Littorina (Melaraphe) ziczac Chem. (var.). Tryon, Man. Vol. 9, p. 251, pi. 45, 



figs. 5-7. 



Yaeyama. 48 living shells, found with a lot of Melarapus. 

 Littorina littoralis Linn. Tryon, Man. Vol. 9, p. 242, pi. 41, figs. 5-8. 



Yaeyama. 10 live shells. 



Littorina scabra Linn. var. filosa Sby. Tryon, Man. Vol. 9, p. 244, pi. 42, fig. 28. 



Yaeyama. 

 Hchinella cumingi Phil.* Yaeyama. 



SOLARIID.£. 

 Solarium cingulum Kien.* Nago Is. 

 Solarium hybridum Linn.* Nago Is. 



CYCLOPHORID.ffi;. 



Cyclophorus turgidus Pfr.* 



Miya-Kojima ; Yaeyama. The shells from the locality first men- 

 tioned above are typical, agreeing well with the figures in the Conch- 

 ylien Cabinet. The specimens from Yaeyama diflfer in having the 

 peripheral keel almost, or in some specimens wholly, obsolete. 



Leptopoma vitreum Less.* Yaeyama. 

 Cyclotus taivanus H. Adams.* 



Miya Kojima Is. A single specimen, apparently not difiering 

 from this Formosan species. 



