PLATE 22. 



Cross spot ions of Ilalomcnia gravida. X 55. 



Figs. 1, 2. 3 correspond to lines A, 15, C in fig. 3, pi. ."> (anterior end). 

 Fig. 4. Section through body behind pharynx. 

 Fig. 5. Salivary gland lobules opening into main duet. 



Figs. 6, S, 11 (see fig. S, pi. 15) correspond to lines E, F, G in lig. .'i, pi. 3 'posterior cntl). 

 Fig. 7. Longitudinal section through advanced larva, showing cerebral ganglion chain of nuclei, 

 stomodaeum, st, and early stage in the development of the anterior pedal gland and outlet, f. 

 Fig. 9. Section through anterior division of heart. 

 Fig. 10. Section through junction of two divisions of heart. 

 Fig. 12. Section through dor.so-terniinal .sense organ. 

 Fig. 13. Spines from middle of body. X 300. 



