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                        INDEX TO PLATES.                          v

FAVOSITE8-Continued.                                    PLAT=.
    pirum.......                                        14,15
    proximus .1....... 15,27,28
    quercus....                                         18, 19
    radiatus.....   .    .   ............................. 12, 13
    radiciformis ...........................................        20
    ramulosus....                                          19
    rotundituba.......                          ,       14, 27
    spiculatus.......                                      15
    spongilla.......                                                8
    tuberosus.....                                      16, 19
    venustus...............................................          9

MI1CHELINLA
    clappi  ................................................. 41,42
    corrugata.      .....................................  39
    cylindrica .32,36
    favositoidea.                                       37, 38
    insignia .27,39,40
    niagarensis .39
    plana .38 39, 40
    prima .39, 40

M ILLERIA
   laminata.                                             46

PLATYAXUM
   canadense............                                  60
   corioideum .61
   fischeri.                                              60
   foliatum.                                              63
   turgidum...........                       ,            60
   undosum ...............................................         60

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