The pronephros of Chryseinys marginata. 27 



Body begins 5,5. 



Gut begins 2,7; foregut ends 3,24; heart extends from 2,15 to 

 3,24; neurenteric canal (7,24—7,27). 



The condition of the kidney on the left side. 



A vascular outgrowth is prominent from 3,34 extending back 



to 3,44.1) 



3,44) 



3 45 i Nephrostome of 1st pronephric tubule opening into coelom. 



The nephrostome opens lateral to the remains of the 

 -y.,, nephrotome. 



^ 4,2 The duct extending from 4,1 backwards opens in this 

 section to the coelom close to the nephrotome region. 

 Moreover the duct is solid, small, and apparently de- 

 generating, as also is the nephrotome. 



1) I have used the term "glomus" for this vascular outgrowth, though 

 this is not the generally accepted meaning of the term. 



