PLATE 10 



EXPLANATION OF FIGURES 



53 Pleuropodium of Photinus consanguineus; sagittal section. A, fat cells; 

 E, hasal cup; H, unmodified hypodermis; G, gland cells. 



54 Pleuropodium of Photuris pennsylvanica; sagittal section. A, fat cells; 

 C, cap: H, hypodermis; G, gland cells. 



o~) Pleuropodium of Photuris pennsylvanica, at a much later stage than 

 figure 54. .4, fat cells; B, boundary between two gland cells; C, cap; D, duct 

 of a gland cell; G, gland cell; H, hypodermis; V, basal vacuole of gland cell. 



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