PLATE XIV 



Fig. I and 2. — Normal blood corpuscles of the gipsy-moth caterpillar. 



Fig. 3 and 4. — "Mulberry" corpuscles of the gipsy-moth caterpillar. 



Fig. 5. — "Mulberry" corpuscle of the gipsy-moth caterpillar crushed, showing 

 nucleus. 



Fig. 6. — Blood corpuscle of the gipsy-moth caterpillar, showing nucleus filled with 

 polyhedra. 



Fig. 7 to 9. — Blood corpuscles of the gipsy-moth caterpillar with phagocytized 

 polyhedra. 



Fig. 10. — Cytoplasmic-free pathological blood corpuscles of the gipsy-moth cater- 

 pillar. 



Fig. II and 12. — Crystals found in gipsy-moth caterpillars that died of the "other 

 cause . ' ' 



90271°— 15 3 



