24 LARV^ OF THE PRIONIN^. 



PLATE VII. 



Larval Work of Prionin^. 



Work of Mallodon dasystomus in living willow tree. Collected by J. B. Gill in Mis- 

 sissippi, Note how heartwood is first destroyed. Reduced. 



PLATE VIII. 

 Pupation of Prionine Larv^. 



Fig. 1. — Pupal cell of Prionus imhricornis. About natural size. 



Fig. 2. — Orthosoma brunneum, dorsal view of pupa. Note peculiar carina on an- 

 terior extremity of abdominal tergites and fleshy lobe of preceding segment which 

 projects under. About twice enlarged. 



Fig. 3. — Orthosoma brunneum, ventral view of pupa. About twice enlarged. 



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