SONNINIA— CLASSIFICATION. 



j8. Lateral lobules short. 



389 



Fig. 18. — Outline of L of Sonn. plieata. 



Sonn. plicata. (Page 415.) 



Sonn. semispinata. (Pages 343 and 416.) 



y. Lateral lobules rather long, outer bipartite. 



Pig. 19. — Outline of L of Sonn. revireseens. 



Sonn. reviresoens. (Pages 324 and 417.) 

 b. Outer lateral lobule of L strongly bipartite. 



Fig. 20. — Outline of L of Sonn. biplicata. 



Sonn. irregularis. (Pages 320 and 417.) 

 Sonn. biplicata. (Pages 345 and 417.) 



B. The lobes become short in catagenesis. 



Fig. 21.— Outline of L of Sonn. ptycfa. 



