rr,AT]': c"xv. 



[Part X.— /V/77 1007.] 



Lkptodo.ntakion iiihaskanus, Pilsbry. South I'"l)nll()^^a. 



l'ij,f. 1. Animal, \ic'w of tlic rij;lit side, from a spirit-specimen, x 4"."). 



] II. Ditto, left side. 



1 I,. Slicll, X [■». 



I'ktalochi.amvs i'okmosana, Sclimaekcr & Boettger, var. nvroiiitAPTA, 

 l^ilsiny & Hirase. South Formosa. 



Fiir. iJ. Animal, part of tin; right si(k' ami foot, x I'u. 



2 a. Ditto, left side and foot, x I'.'). 

 2 h. Shell, X 4-5. 



La.mi'kocystis iT'iciDA, II. sp. Soutli Fomiosa. 



Fij;. 3. Foot of the animal, with shell, viewed from aliove and right side, x I'.'). 



'ill. Animal, vii;\ved from the lelt side, X l':"). 



'All. Extremity of foot, x \'l I. 



'6 c. Ditto, showing mneous gland and sole of the foot, x 12'4. 



3^/. Kight shell-lohe and |)ortion near the rectum, x 12"1. 



.S e. Shell, front view, x l"."). 



'A/. Ditto, Ironi above, x r5. 



Di lUiEi-i.A itooEiisi, n. sp. South Andaman Islands. 



Fig. A. Animal, viewed from the right side, x 1'5. 

 A. a. Ditto, viewed from the left side, x -i'). 



SoPHiNA CAI.1AS, Benson. Mergui. 



Fig. 5. Animal, part of, showing right shell-lobe, x •i"5. 



o II. Ditto, view of the left side and extremity of foot, x A\>. 



