424 PROCEEDINGS OF THE ACADEMY OF [J^llj, 



EXPLANATION OF PLATES XXII AND XXIII. 



Plate XXII, Figs. 1-3. — Clausilia caUistochila. 



Fig. 4. — Clausilia caUistochila. Clausilium, showing form of the apex. 



Figs. 5, 6. — C. osldmoi. I, Inferior lamella; P, lower end of the lower 

 palatal plica ; 6', subcolumellar lamella ; /Sp., spiral lamella ; 5mj)., superior 

 lamella. 



Figs. 7-10. — C. pseudosJiimcB. 



Fig. 11. — C. pseitdo»himm. Clausilium, turned to show form of the apex. 



Fig. 12. — C oshim(e. Clausilium, interior face; 13, profile from colum- 

 ellar side ; 14, inner face, turned to show form of the apex. 



Fig. 15. — 0. nesiothduma. Clausilium, interior face ; 16, the same, 

 turned to show form of the apex. 



Fig. 17. — C. tnima. Clausilium, turned to show form of the apex ; 13, 

 interior face of the same. 



Figs. 19-21 — C. nesiotfiauma. Fig. 20 showing the spiral and inferior 

 lamellre, and on the left side part of the lunella and lower palatal plica, 

 with the dilated portion of the subcolumellar lamella. 



Plate XXIII, Figs. 23-25. — C. crenilaUum. I, inferior lamella , L, 

 lunella ; P, lower palatal plica ; S, subcolumellar lamella. 



Fig. 26. — G. crenilabium. Clausilium, seen in profile from the columellar 

 side ; 27, apical view ; 28, interior face ; 29, the same turned to show shape 

 of the apex. 



Figs. 30-32.— C. BernarcUi. 



Fig. 33. — C. crenilahium. 



Figs. 34-36.— C munus. 



Figs. 37-39. — G. miina. 



Figs. 40-42. — C. ptycliocJdla (copied from Boettger). 



Fig. 43. — G. excellens (type specimen of G. jivoeclara Gld., drawn by Dr. 

 J. C. McConnell). 



