PLATE 1 
EXPLANATION OF FIGURES 
1 Latero-dorsal view of the second left nephridium of A. cristata. X 15. 
2 Latero-ventral view of the second left nephridium of A. crist2ta. X 15. 
3 Latero-dorsal view of the third left nephridium of A. grubii. X 15. 
4 lLatero-ventral view of the fourth left nephridium of A. marima. X 15. 
5 Latero-dorsal view of the third left nephridium of A. claparedi. X 15. 
6 Latero-ventral view of the third left nephridium of A. ecaudata. X15. The 
bladder end shows a latero-dorsal view, but the rest of the nephridium is twisted 
by the weight of the gonad. 
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