PLATE XIX. 



Pig. 1. — Desmacidon Icergmlemnsis R. & 1). vai'. aniarctica var. n. Nat. size, p. 37 



Fifi. lii. — Section of same ( x 5). 



Pig. 2. — Desmacidon kerffttelenmsis R. & D. var. cactoide.t v<;r. n. Nat. size, p. 38. 



Fig. 3. — Desmacidon spinigera Kirkp. Nat. size, p. 30. 



Pifi. 3a. — Section of same (x 3). 



Fig. 4. — Demnacidon mamndrina Kirkp. Nat. size, \i. M). 



Pig. 4a. — Section ( x 2). 



Pig. 5. — CWcidochela lankesteri Kirkp. Ni . size, p. 42. 



Fig. Oa. — Section of same (x 15). 



Pia. (i. — IToplaldthara dendyi Kix^t^. Nat. size, p. 4-1. 



Fig. 6a. — The same ( x 8). 



Pig. (;b.- Oblique section across the upper half of the specimen (x 26). 



