PLATE 42. 



Onuphis crassisetosa Chamberlin. 



Figures 1-6. 



1. — Anterior end, dorsal view. X 27. 



2. — Mandibles. X 45. 



3.— Maxillae. X 45. 



4. — Composite crochet of second parapodiuni. X 429. 



5. — Limbate seta from middle region of body. X 429. 



6. — Distal end of aciculum from middle region of body. X 429. 



