REFERENCE TO PLATES. 



Plate 1 (Frontispiece). 



FIfiURE. PAGK. 



1. Oliva puelchana. Orb. Chenu, Conch. 111., t. 5, f. 7 7U 



2. Oliva Brasiliana, Lam. Chenu, Conch. 111., t. 35, f. 5 90 



3. Oliva er_ythro?toma, Lam. Chenu, Conch 111., t. 33, f. 7 80 



4. Oliva subulata, Lam. {=-- acuminata, Lam.). Chenu, Conch. 111., 



t. 32, f. 1 88 



5. Oliva maura, Lam. Chenu, Conch. III., t. 34, f. 4 78 



6. Oliva tehuelchana, Orb. Weinkauff, in Kiister, Conch. Cab 68 



Plate 2. 



Lingual Dentition. 



7. Erato callosa, Ad. and Reeve. Troschel, Gebiss der Schnecken t. 



18, f. 5 5, 7, 9 



8. Marginella elegans, Gmel. Troschel, ii, t. 5. f. 6 7, 30 



9. Marginella (Volvaria) Philippinarum, Redfield. Troschel, i', t. 



5, f. 8 7, 51 



10. Marginella (Persicula) clandestina, Brocchi. Troschel, ii, t. 



5, f. 11 7, 40 



11. Marginella (Cystiscus) Capensis, Stimpson. Am. Jour. Conch., i, 



t 8, f. 20 6,40 



12. Oliva irisans. Lam. Troschel, ii, t. 10, f . 7 60 



13. Oliva (Agaroria) hiatula, Lam. Troschel, ii, t. 10, f. 2 60 



14. Oliva (Olivella) mutica. Say. Troschel, ii, t. 10, f. 14 60 



15. Ancillaria ampla, Gmel. Troschel, ii, t. 10, f. 17 61 



16. Ancillaria catfra, Forsk. Troschel, ii, t. 10, f. 15 61 



17. Harpa conoidalis, Lam. Troschel, ii, t. 10, f. 1 61 



18. Columbelia rustica, Lam. Troschel. ii, t. 10, f. 2 102 



19. Columbelia (Strombina) gibberula, Sowb. Troschel, ii, t. 9, f. 10.. 102 



20. Columbelia (Anachis) rugosa, Sowb. Troschel, ii, t. 9, f. 9 102 



Plate 3. 



21. Anatomy of Oliva. a, I, mantle ; b, mantle process, laying in the 



sutures of the spire of the shell; c, head lobes ; d, siphon ; e, 

 mucous glands ; /, kidney ; ff, anus ; h, liver ; A-, salivary glands ; 

 m, branchiae ; n, heart. Chenu, Conch. lUust., iv, t, 33 59 



22. Plochelnea crassilabra, Gabb. Proc. Phil. Acad., t. 11, f. 5, 1872... 60 



23. Monoptygma Lymneoides, Conrad ( - Alabamiensis, Lea). Conr., 



Tert. Foss., t. 16, f. 6 •. 61, 91 



24,25. Olivula si aminea, Conrad. Conr., Tert. Foss., t. 10, f. 5 61 



26. Ancillaria (Ancillopsis) scamba, Conr. Con., Ter. Fos., t. 10, f. 4. 61 



27. Ancillaria (Ancillopsis) altile, Conr. Con., Ter. Fos , t. 10, f. 2. 61 



28. Marginella (Volvaria) bulloides. Lam. Chenu, Manuel, f 1072 7 



29. Marginella (BuUiopsis) cretacea, Conrad. Jour. Philada. Acad., 



2 ser., iv, t. 46, f. 27 16 



