EXPLANATION OF PLATES. 343 



36-41. Tonicia disjuncta Fremb. Emerton del., . . .212 

 42-51. Craspedochiton laqueatus Shutt. Emerton del., . 285 

 52. Ischnochiton rugulatus Sowb var. Conch. Icon., . .110 



PLATE 40. 



1,2. Tonicia truncata Sowb. Conch. Icon., . . . 211 



3, 4. Tonicia fortilirata Sowb. Conch. Icon., . . . 207 



5,6. Tonicia picta Sowb. Conch. Icon., . . . .211' 



7. Tonicia carpenteri Angas. P. Z. 8., . . . . 208 



8-11. Tonicia lamellosa Q. & G. Voy. Astrol., . . .209 



12. Tonicia zschaui Pffr. Moll. S. Georg., . . . .204 



13-15. Tonicia tehuelchus Orb. Voy. Amer. Merid., . . 205 



16, 17. Tonicia suezensis Eve. Conch. Icon., . . . 206 



PLATE 41. 



19. Tonicia chilensis Fremb. Pilsbry del., . . . .197 



20. Tonicia chilensis Fremb. Conch. Icon., . . . .197 



21. Tonicia fastigiata Sowb. Pilsbry del., . . . .199 



22. Tonicia elegans Fremb. Pilsbry del., .... 196 

 Betw. 22 and 24. Tonicia elegans Fremb. (color-pattern only). 



Pilsbry del., . " . 106 



24. Tonicia elegans Fremb. (second valve). Pilsbry del., . 196 



25. Touicia lineolata Fremb. Conch. Icon., . . . .198 



26. Tonicia lineolata Fremb. Zool. Journ., .... 198 



27. Tonicia lineolata (var. connecting with elegans). Ross 



del., 198 



28. Tonicia atrata Sowb. Conch. 111., . . . .201 



29. 30. Tonicia atrata Sowb. Conch., Icon., . . .201 



PLATE 42. 



31. Tonicia elegans Fremb. Ross del., . . . .196 



32. Tonicia elegans Fremb. var. Conch. Icon., . . . 196 



33. 34, 35. Tonicia elegans Fremb. (not typical). Emerton, 



del, , . .196 



36-39. Tonicia fastigiata Gray. Conch. Icon, . . .199 



40. Tonicia chilcensis (fastigiata). Conch. Icon., . .199 



PLATE 43. 



41. Tonicia swainsoni Sowb. Conch. Icon., .... 201 



42. Tonicia swainsoni Sowb. Pilsbry del., .... 201 



43. Tonicia swainsoni Sowb. Ross del., .... 201 



44. 45. Tonicia granifera Sowb. Conch. Icon., . . . 200 

 46, 47. Tonicia grayi Sowb. Conch. Icon., .... 200 

 48, 49. Tonicia (?) martieli Rochebr. Moll. Cap Horn, . 203 

 50, 51. Tonicia horniana Rochebr. Moll. Cap Horn, . . 203 

 52, 53. Tonicia lebruni Rochebr. Moll. Cap. Horn, . . 203 



