PLATE 1. 



Harmothoe mexicana Chamberlin. 



P'igiires 1-9. 



1. — Anterior end, dorsal view (style of median tentacle broken off; tentacular cirri in outline). 



X27. 

 2. — Twenty second right parapodium, caudal view. X 18. 



First elytron. X 21. 



Small portion of same elytron. X 187. 



Neuropodial seta, common form. X 108. 



— Neuropodial seta, second form. X 108. 



— Small portion of neuropodial seta, common form, viewed from edge. 



— The same, viewed from side. X 1073. 



— Xotopodial seta, distal portion, side view. X 63. 



X 1073. 



