BRITTON AND ROSE 



PLATE XXXIV 



11 I I ,ilou del. 



1. Part of joint of (tyttnlia Itucotricha. 3. Joint of Ofiinilia !ii.<iin-<i>itlia. 



2. Part of joint of Opnntiti maxima. 4. Joint of O/>nnliti xi/'t/ata. 



(All natural size.) 



