Johnson. — Polychaeta. 
PLATE 6. 
Figs. 60-66. Euphrosyne heterobranchia. 
Fig. 60. The prostomium, dorsal aspect, showing the antennae, the tentacle, the 
dorsal eyes, and the caruncle. X 40. 
Fig. 61. Tip of one of the unserrated, cleft, dorsal setae. X 200. 
Fig. 62. Tip of serrated, cleft, dorsal seta. The serrations are almost restricted 
to the lower fork. X 200. 
a. Tip of another seta of same kind, fully serrated. X 200. 
Figs. 63, 64. Bifid, dorsal setae of two forms. X 200. 
Fig. 65. Ventral seta of the usual form. X 200. 
Fig. 66 a , 5, c. Various forms of branchiae. X 32. 
Figs. 67-70. Pionosyllis elongatci. 
Fig. 67. Anterior portion of immature specimen (146 somites). X 32. 
Fig. 68. Posterior extremity, showing pygidium, anus (a.), and anal cirri. X 32. 
Fig. 60. Foot from middle of body. X 52. 
Fig. 70. Seta tip. Minute serrations sometimes present on concave side of 
falcate appendage. X 275. 
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