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ASCAEIS LUMBRICOIDES, Liuu. 



Plate XXI. 



Adult male, natural size. 



Adult female, natural size. 



Top view of head enlarged ; a, dorsal lip with two papillae ; 6, 6, ventral 



lips with one papillae each. 

 Head, ventral view. 

 Head, dorsal view. 



The lips greatly enlarged and flattened : a, a, papillae ; b, 6, the serrated 

 edge of ohitinous support. 

 Fig. 7. Tail of male, ventral view : a, anus; 1, 2, 3, 4 and 5, 6 and 7, the post- 

 anal papilliB ; 8, the unpaired pre-anal ; 9, 9, 9, other papillae. 

 Fig. 8. The two spatulate spicula: 8a, one of these enlarged. 

 Fig. 9. Portion of female: a, the genital opening; 6, the ventral line; c, one of the 



two lateral lines. 

 Fig. 10. Tail of female, lateral view. 

 Fig. II. The same, ventral view. 



