EXPLANATION OF PLATES. 325 



FIGURE PAGE 



6. Lauria gibba, last part of outer wall broken away, 



showing : a, angular lamella ; b, basal fold ; c, 

 columellar lamella; p, parietal lamella; u.p, 

 upper-palatal fold 115 



7. Lauria gibba, outer wall viewed from inside, showing: 



l.p, lower-palatal fold ; s.p, suprapalatal fold ; u.p, 

 upper-palatal fold. 114986 115 



8. Lauria lamellosa (Lowe). Fossil specimen 116 



9. Lauria lamellosa. Recent specimen. Brocton-Tom- 



lin coll 116 



10, 11. Lauria lamellosa. Top and base of a young shell. 



Brocton-Tomlin coll 116 



12, 13. Lauria abbreviata (Lowe). Near Canical. Broc- 

 ton-Tomlin coll 108 



Plate 15. (Lauria, Canaries, Azores) 



1. Lauria castanea (Shuttl.) Teneriffe. B. Walker coll. 118 



2. Lauria taeniata (Shuttl.) Teneriffe. 114473 120 



3. 4. Lauria pythiella (Monss.). Above Buenavista. 



128900 119 



5. Lauria rugulosa (Morel.). After Morelet 126 



6, 7. Lauria fuscidula (Morel.) . Azores 5074 124 



8. Lauria vermiculosa (Morel.). San Miguel. 5076 .. 126 



9, 10. Lauria fuscidula hexodon Pils. San Miguel. 22867. 125 



11. Lauria fuscidula hexodon Pils. San Miguel. 130121. 125 



12. Lauria tesselata (Morel.), base of young shell. 5075. 128 



13, 14. Lauria tesselata (Morel.). Santa Maria. 22868. 128 

 15. Lauria tesselata (Morel.), later whorls opened. 5075. 128 



Plate 16. (Agardhia) 



1, 2. Agardhia biplicata (Mich.). After Pollonera ... 148 



3, 4, 5. Agardhia b. toscaniae (Bgt.). Florence. 22691. 151 



6, 7. Agardhia b. ligustica (Poll.) . After Pollonera .... 147 



8, 9. Agardhia excessiva (Gredl.). After Pollonera . . . 151 



10, 11. Agardhia b. locardi (Locard.). After Caziot .... 149 



12. Agardhia bielzi (Rossm.). Brosteni. 22690 153 



13, 14. Agardhia bielzi (Rossm.). Rodna Mts. 114993.153 

 15, 16. Agardhia bielzi f. euodon (West.). Rodna Mts. 



114993a 154 



Plate 17. (Agardhia) 



1, 2. Agardhia blanci niciensis (Poll.). After Pollonera. 140 

 3, 4. 5. Agardhia blanci (Bourg.). St. Martin Lantosque. 



22730 138 



