54 



ART. 8. — I. IKEDA : THEEE NEW AND 



a group to form a half-pair, they open close together apparently 

 without a definite rule as to the relative position of the pores. 



The exact manner of the grouping of segmental organs may 

 be best seen from the following tables, which I have drawn up 

 from four specimens available for the pur]3ose. 



Specimen A, J. (Dissection figured in fig. 4Ü). 



Specimen B, J. (Somewhat smaller than Spec. A). 



Specimen C, ^. (Somewhat smaller than Spec. A). 



Specimen D, Ç. (The single female at dis})üsal). 



