REFERENCE TO PLATES. 245 



FIGTTKE. PAGE. 



35, 36. Microcystis YayauensiSjBaird (= margarita). Yoy. 



Curacoa, t. 40, f. 10, 11, ... . . 114 



37-39. Microcystis margarita, Jacq. Astr. et Zel., t. 11, 



f P. 7 114 



i , i/" i . . . . . 



40-42. Microcystis exa?quata, Gld. Moll. Wilkes' Expl. 



Exped., t. 5, f. 61, 114 



43-45. Microcystis Lowi, Issel. Ann. Genoa, vi, t. 5, f. 



16, 17, 19, ... 



46. Microcystis nemotophora, Pfr. Conch. Icon., f. 1333, 114 



47, 47 a, 48. Microcystis misella, Fer. Conch. Cab., t. 29, 



f. 14, 16, .. .... 



49. Microcystis subtilis, Anton. Conch. Icon., f. 626, , 113 



50. Microcystis brunnea, Anton. Ibid., f. 628, . . . 113 



51. 52. Microcystis radians, Pfr. Conch. Cab., t. 144, f. 



22,23, . 115 



53-55. Microcystis simillima, Garrett. Jour. Philad. Acad. 



ix. t. 2, f. 32, 115 



56-58. Microcystis scalpta, Garrett (= Tahaensis, Tryon). 



Ibid., ix, t. 2, f. 30, 115 



59-61. Microcystis ornatella, Beck. Conch. Cab., t. 129, 



f. 7-9, ... 115 



62-64. Microc3 r stis venosa, Pease. Am. Jour. Conch., ii, 



t. 21, f. 2, . 116 



65-67. Microcystis pertenuis, Gould. Moll. Wilkes' Expl. 



Exped. /f. 60, ... . .116 



68-70. Microcystis cryptoportica, Gould. Ibid., f. 72, . 116 

 71-73. Microcystis cicercula, Gould. Ibid., f. 73, . .116 

 74-76. Microcystis Cbamissoi, Pfr. Specimen, . .116 

 77-79. Microcystis friyola, Pease. Amer. Jour. Conch., ii, 



t. 21, f/3, 116 



PLATE 39. 



80-82. Microcystis normalis, Pease. Jour. Phila. Acad., 



ix, t. 2, f. 33, 116 



83-85. Microcystis angustivoluta, Garrett. Ibid., ix, t. 2, 



f. 34, . . . . . . . . . .117 



86-88. Microcystis clausa, Heude. Hist. Nat. Emp. Chi- 



nois,t. 13, f. 8, . . . . . . . .117 



89-90. Microcystis Samoensis, Baird(=TJpolensis, Mouss.). 



Yoy. Cui^oa, t. 40, f. 12, 13, . . . 119 



91. Microcystis Alleryana, Crosse. Jour, de Conch., t. 3, 



f. 5, 1874, .119 



92-94. Microcystis subtillissima, Gould. Moll. Wilkes 



'Exped., t. 5, f. 62, 117 



95-97. Microcystis gemma, Pfr. Conch. Cab., 1. 122, f. 19-21, 117 



