174 REFERENCE TO PLATES. 



FIGURE. PAGE. 



71-73. Scurria punctatissima Ph. Abbild., . . .64 



74-76. Scurria parasitica Orb. (Lottia cymbiola Old.). U. 



S. Expl. Exp., 63 



77, 79. Acmsea scutum Orb. Amer. Merid., . . .32 



78, 80, 81. Acmsea scutum Orb. Original, . . .32 

 82-84. Acmssa nisoria Ph. Abbild., . . . .33 

 85-87. Acmsea albescens Ph. Abbild., . . . .36 



88, 91. Acmsea coffea Rv. Conch. Icon., . . .35 



89, 90, 91. Acmsea exilis Ph. Abbild., . 35 



PLATE 5. 



91,92. Acmsea antillarum Sowb. Original, . . 38, 166 

 93-95. Acmsea antillarumSby. (candeana Orb.). Moll. Cuba, 38 



96-98. Acmaea elegans Phil. Abbild., ... 39 



99, 100, 1-5. Acmsea punctulata. Original, 



6. Acmsea punctulata. Conch. Icon., 



7. Acmsea antillarum var. Conch. Man., 



8-10. Acmsea antillarum Phil, not Sowb. Abbild., 

 11-13. Acmsea punctulata Gm. (cubaniana Orb.). Moll. Cuba 

 14, 15. Acmsea cimeliata Rv. (leucopleura Gm.), 

 16-21. Acmsea leucopleura Gm. typical. Original, 

 22, 23. Acmsea leucopleura (albicostata Rv.). Conch. Icon. 

 24,25. Acmsea balanoides Rv. (= leucopleura). ,C. Icon. 

 26. Acmsea occidentalis Rv. (=leucopleura). Conch. Icon. 



PLATE 6. 



37 

 37 

 39 

 43 

 37 

 41 

 40 

 40 

 40 

 40 



27, 28. Acmsea stipulata Rve. Conch. Icon., . . .31 



29-31. Acmsea stipulata Rve. Original, . . .31 



32, 33. Acmaea instabilis Gld. U. S. Expl. Exp., . . 18 



34, 35. Acmsea pediculus Phil. Conch. Icon., . . 30 



36, 37. Acmsea insessa Hinds. Original, . . .18 



38, 39. Acmsea asmi Midd. Original, . . . .19 



40. Acmsea depicta Hinds. Original, . . . .19 



41. Acmsea depicta var. Original, 19 



42. Acmsea paleacea Gld. M. & C. Sh., 



43-45. Acmsea nacelloides Dall. A. J. C., . . .18 



46, 47. Acmsea mitella Mke. Conch. Icon., . . .29 



48, 49. Acmsea mitella Mke. Original, . . . .29 



50, 51. Acmsea fascicularis Mke. Original, . . .26 



52, 53. Acmsea fascicularis Mke. Conch. Icon., . . .26 



PLATE 7. 



(With the exception of figs. 68-70, the figures of this plate were 

 drawn from the type specimens, by the author.) 



57-60. Acmsea Dalliana Pils. Original, . . . .13 



61-63. Acmsea atrata Cpr. Original, . . . .29 



