252 



STEUCTURE OF GLAXDS. 



so rich in varied forms.* The peculiar constitution and 

 mode of distribution of the blood of the insect division of the 



Fig. 253 (continued). 



6. 



10. 



9. 



6. Capsus tricolor. 



7. Bostrichus capucinus. 



8. Staphylinus maxillosus. 



9. Prionus coriarius. 

 10. Sih)ha obscura 



* There are few divisions of comparative anatomy so much calcu- 

 lated to set in a clear light the importance of this science in connexion 

 with the study of general morphology, as the sketch just given of the 

 vast variety of form presented hy the glandular system. If we would give 

 plans or ideal outlines of the principal forms of the different elements of 



