THE 



CONCHOLOGICAL MAGAZINE 



Vol. II November, 190S No. 1 1 



LAND SHELLS OF QUELPART ISLAND (KOREA) 



Py H. A. PILSBRY and V. HIRASE 

 (With PL. IV) 



The following notes are to be regarded as a supplement to Mr. 

 Tokubei Kuroda's valuable article upon Quelpart lar.d shells in the 

 June issue of this journal. The results of study upon species not 

 identified at that time are here given. 



Cyclophorus herklotsi Martens. 



The specimens from Cheju are practically typical. 



Cyclotus minutus quelpartensis n. subsp. 



The shell is very similar to C. minutus concentratus, but differs 

 by being a little less depressed. The whorl slopes below the suture, 

 not being so horizontal or flattened there as in C. in. concentratus ; 

 there is a fraction of a whorl more (barely four whorls, or even less 

 in C. m. concentratus, over four in C. in. quelpartensis) ; the um- 

 bilicus is a trifle narrower. Finally, the whorls of the operculum 

 are less sharply striated. 



Alt. 6, diam. 7 mm.; diam. of aperture with peristome 3 mm. 



Cheju, Quelpart. Cotypes No. 95,824 A. N. S. P., and No. 1,535 

 Hi rase coll. 



Spiropoma japonicum chejuense n. subsp. 



The umbilicus is slightly narrower and deeper than in X japo- 

 nicum, owing to the slightly higher spire and more descending last 

 whorl. The columellar margin of the peristome is retracted more 

 than in japonicum. Cuticle smooth, yellowish olive colored. Alt. 

 6.2, diam. 12 mm. 



Cheju. Cotypes No. 95,763 A. N. S. P. and No. 1,447 l ' Hirase 

 coll. 



A form somewhat intermediate between japonicum and yaku- 

 sliimanuui. 



