I'LATE 50. 



Onuphis pachytmema Chamberlin. 



Figures 1-6. 



1. — Distal end of composite crocliet from the second parapodium. X 1075. 



2. — Tip of coarse ventral seta corresponding to composite crochets of first three parapodia, from fourth 



parapodium. X 1075. 

 3. — Distal portion of ventral seta from middle region of hody. X 429. 

 4. — Dorsal capillary seta from second parapodium. X 429. 

 5. — Pectinate seta from middle region of body. X 1075. 

 6. — Distal portion of aciculum of sixty sixth somite of paratype. X 278. 



Onuphis litabranchia Chamberlin. 

 Figure 7. 

 7. — Maxillae of left side, dorsal view. X 45. 



