322 EXPLANATION OF PLATES. 



FIGURE PAGE 



7. Orcula raymondi f. quadrifilaris (Rosen). After 



Kosen 41 



8. Orcula raymondi bifilaris truncata (Eosen). After 



Rosen 42 



9. Orcula r. bifilaris (Mouss.). After Mousson 42 



10. Orcula subconica (Sdbg.). Landschneckenkalk. 



139994 3 



Plate 5. {Orcula, Lauria) 



1-4. Orcula doliolum, young. After Reinhardt 2 



5, Orcula sirianocoriensis orientalis (Pfr.). After 



Pfeiffer 29 



6, 7. Orcula s. coerulescens (Naeg.). Sert. 140003 ... 30 



8. Orcula sirianocoriensis (Mss.). After Kobelt 28 



9-12. Lauria anglica (Wood). Belfast. 22674 83 



13-14. Lauria numidica (Bgt.). After Bourguignat ... 86 



15-17. Lauria caucasica (Pfr.). Kobi. 130129 74 



Plate 6. (Lauria) 



1, 2. Lauria cylindracea (DaC). Collingham nr. Tad- 

 caster. 22714 47 



3, 5. Lauria cylindracea (DaC.) albino. Lancashire. 



109430 47 



4, 6. Lauria cylindracea (DaC). Calvados. 22664... 47 



7, 8. Lauria cylindracea (DaC.) young specimens. 109430 47 



9. Lauria c. villas (Kstr.) . After Kuester 50 



10-12. Lauria c. anconostoma (Lowe). Madeira. 22865, 



3932 51 



13. Lauria c. dohrni (Pfr.). S. Antonio, Cape Verdes. 



64111 53 



14, 15. Lauria c. dohrni (perdubia Woll.) . Tomlin coll. . . 53 

 16, 17, 18. Lauria c. poupillieri (Bgt.). After Bourguig- 

 nat 51 



19, 20. Lauria umbilicus (Roth). S. Giorgio, Syra. 130128 54 



Plate 7. (Lauria) 



1. Lauria vulcanica (Kstr.). After Kuester 54 



2, 3. Lauria sempronii (Charp.). Lombardy. 22673 .. 55 



4. Lauria s. dilucida (Rssm.). Kalamata. 130117 ... 56 



5, 6. Lauria caspia (Pfr.). Lenkoran. 130120 57 



7, 8. Lauria fanalensis (Lowe). Madeira. 128899, 



97285 58 



9, 10. Lauria fanalensis (Lowe). Teneriffe, Tomlin coll. 58 



11, 12. Lauria f. pyramidula (P. & S.). Paratypes. 98200. 60 



