Hawaiian Qpisthobf anchiates — OsTERGAARD 
121 
Fig. 8. Placobranchus ianthobapsus Gould, a, Dorsal aspect; b, creeping individual; c, expanded to show branchial 
surface with rows of symbiotic algae; d, ventral aspect; e, three principal types of ocelli; f, details of dorsum of 
head showing eyes, (a, b, c, d, ca. X 8.6; e, /, greatly enlarged.) 
