Johnson. — Polycliaeta. 
PLATE 5. 
Figs. 48-52. Nerei» cytlnrus. 
Fig. 48. Anterior extremity, dorsal aspect, showing large, eollariform peri- 
stomium, within which the prostomium is partially withdrawn. 
Young specimen. X 8.5. 
Fig. 49. Tenth foot, anterior aspect. X 13. 
Fig. 50. Falcate seta from lower fascicle, ventral ramus, of foot from anterior 
region of body. X 200. 
Fig. 51. Falcate seta from upper fascicle of ventral ramus. X 200. 
Fig. 52. “Fish-bone” seta, upper fascicle, ventral ramus. X 200. 
Figs. 53-59. Nereis procera. 
Fig. 53. Anterior extremity, dorsal aspect. X 8.5. 
Fig. 54. Forty-first foot, showing stout, dorsal seta and three slender ones. 
X 23. 
Fig. 55. Foot further back ; slender dorsal setae no longer present. X 23. 
Fig. 56. Foot from posterior region, near pygidium. X 23. 
Figs. 57, 58. “ Fish-bone ” and falcate setae from ventral ramus. X 200. 
Fig. 59. Stout dorsal seta. X 200. 
