16 AKT. ■£.— EKTTAEQ NOMUKA : 



fact, that the chloragogue granules stain hardly with eosin, while 

 the eœlornic grannies always come out well stained. The cœlomic 

 grannies are of unequal sizes and appear like coagulated yolk. 



5. Nepheidia. 



The nephridia are present in pairs on the ventro -lateral side 

 of the intestine, in all the segments except I- VI and IX-XII. 

 The external orifices he just in front of the ventral seta-bundles, 

 and the funnel lies in the preceding segment. There are two 

 forms of nephridia : one is represented by the nephridia of 

 segments VII and VIII, and the other by those of the posterior 

 segments beginning with XIII. 



1). Anterior nephridia. "The mouth of the funnel is 

 obliquely turned towards the median line and its margin is 

 thickly covered with long cilia, which vibrate regularly in turn 

 so as to make a wave pass from one end to the other. The 

 cilia OTOwins in the lumen of the canal are short and their 



-sp 



Fig. 7. 



L. goioi. Side view of anterior nephridium ; reconstructed, x 150. f — funnel, mm — main 

 mass, o — external orifice, sp— septum, vc— vesicular cells, 



