SCHEPMAN : NON-MAEINE MOI.LUSCA FROM JAVA. 239 



This species, -which I have also received from Sumatra, has been 

 often named C. fluminea, Miill., which according to v. Martens is 

 a species from China. 



EXPLANATION OF PLATE X. 



Figs. 1, 2. Vitrinopsis Collingei, n.sp. x 1§. 

 ,, 3, 4. Microparviarion Jacobsoni, n.sp. Nat. size. 

 ,, 5. Shell of same, upper side. Nat. size. 



,, 6. Shell of same, inner side. Nat. size. 



,, 7. Generative organs of same. x 2. Alb.gl. albumen gland; d.s. 



dart-sac ; f.ov. free oviduct ; li.d. hermaphrodite duct ; h.gl. 



hennaphrodite gland ; or. oviduct; jj. jjenis ; pr. prostate; 



r.m. retractor muscle ; r.s. recej)taculum seminis ; v. vestibule ; 



v.d. vas deferens ; v.g. vagina. 

 ,, 8. Part of dart of same, enlarged. 



,, 9-11. Plectotropis Tenggerica, n.sp. x 2. 

 ,,12,13. Siiccinea Javanica, n.s]). x 2. 

 ,, 14-16. Lagochilus trochiformis, n.sp. x 2. 



