PHLEBCEDESIS 



23 



Arthropoda, whilst the blood-holding spaces, henceforward to l)e 



t_.-c^' 



a ^ 



.IP w 



&• t" s -^ 



'/^^ V 



o « 



2 — is 



a is .s 



^ ^ 



called " haemoctt'l," which have been erroneously considered to bo 

 parts of the ccelom, are in reality swollen blood-vessels. 



