PLATE I. 
STRUCTURE OF THE CHELA IN THE REGION OF AMPUTATION. 
Graphic reconstructions of the breaking joint and related segments of the 
left chela, to show the anatomical relations of the blood vessels, muscles. 
nerves, epidermis, and connective tissue. The drawings are incomplete in one 
particular because the finer meshwork of connective tissue in which the 
arteries and nerves are suspended is not represented in its entirety. 
Fic. 1 represents the outer third, and 
Fic. 2 the inner third of the breaking joint and segments. The sides of the 
figures nearest each other are ventral. > 263. 
