PLATE 49. 



Onuphis pachytmema Chamberlin. 



Figures 1-8. 



1. — Seventh left branchia with cirrus, subdorsal view. X 45. 



2. — Eighth left branchia with cirrus, subdorsal -view. X 45. 



3. — Twenty second right branchia with cirrus, ectodorsal view. X 45. 



4. — Twenty fifth right branchia, subdorsal view. X 45. 



5. — Anterior end, ventral view. X 19. 



6. — Fust and second maxillae. X 27. 



7.— Mandibles. X 27. 



8. — Distal portion of crochet from middle region of body. X 429. 



