PLATE XXXI 



r- magnified 375 diameters 



Fig. 1. 



.. .> 







Page. 

 M ii r ksti ri \~ B \ni"- \, larger form containing about forty biparted 



lobelets, with apices furcate or bidentate, . 109 

 smaller form of about twenty bipartite 



lobelets 109 



another form with about twenty-four similar 

 lobelets, some of the apices indicating by 

 t he smaller indentations a further division, 1>'.' 

 MicRASTEKiAfi MTJRicATA, smaller variety, . . .118 



larger former, .118 



transverse vdew of semicell, . l' s 



end view, lls 



