ed by MeBRIDE (0). 



Too epigastric entorocoole is in much the sane 

 condition as that in which we left it in "D"it be- 

 ing as yet too snail to meet ana form a mesentery 

 with the dorsal edges of the hypogastric coolome. 

 Fig. 10.ee. 



The stone and pore- canals tfco have changed very 

 little during ths interval between "D" and "E" .From 

 the ring cans! at a point to the left of th« ooijin 

 cf radial canal l.the stone canal passes upward and 

 opens into the right postero-dorsal part of the ant- 

 erior enterocoele. The pore canal begins s^, pni.rtt 

 at the sane point where the stone canal ends, the 

 two canals thus having a eommon opening into the" 

 anterior enterocoele or ampulla. The pore canal ex- 

 tends from the anterior enterocoele to the dorsal 

 surface cf the larva where it empties through, tl 

 dorsal pore at a point a little to the right of the 

 median sagittal plane. These two canals ,althe 

 extending in the same direction, do not lie in the 

 same straight line the pore canal being set a little 

 anterior to and to the right, of the stone canal. 

 Figs. 17, 18 and 21. st and pc.Gee also Fig. 11. 



