PLATE XVII.1 
Fig. 1. Scale of Lepidonotus cristatus, as a transparent object and some- 
wbat compressed, ...... 
Fig. 2. Posterior scale of Polynoe pustulata, as a transparent object. The 
papillae are flattened by the cover-glass, 
Fig. 3. Space in the scale (from the anterior third) of Iphionella cimex, . 
Fig. 4. Scale from the anterior third of Eunoa iphionoides, 
Fig. 5. Scale of Lepidonotus gymnonotus, .... 
Fig. 6. Posterior scale of Eunoa mindanavensis, .... 
Fig. 7. Portion of a scale of Euphione elisahethce, showing the tubercles 
by transmitted light, ..... 
X 18. 
X 20. 
X 210. 
X 20. 
X about 6. 
X 40. 
X 90. 
1 The scales are seen by transmitted light as transparent objects. 
