PLATE 52. 



Onuphis litabranchia Chamberlin. 

 Figure 1. 

 1. — Branchia with cirrus from anterior middle region. X 63. 



Onuphis cobra Chamberlin. 



Figures 2-8. 



2. — Mandibles, with distal portion of masticatory plates broken off. X 27. 



3.— Maxillae. X 27. 



4. — Distal end of aciculum from posterior region. 



5. — Limbate seta of posterior region, not quite full side view. X 429. 



6. — Pectinate seta with corners not infiexed. X 429. 



7. — Ordinary crochet from posterior region. X 429. 



8. — Special crochet from first parapodium, guard broken off. X 429. 



