164 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.8 



PLATE 15 



Leptopentacta ntna, new species p. 97 



1-2. Hollow plates or buttons from external layer of 

 integument. 

 3. Larger plate from external layer of integument. 

 4-9. Irregular knobbed buttons from inner layer of integu- 

 ment. 

 10-12. Supporting plates from tube foot. 



