56 HARTMAN 



PLATE 1 



Figs. 1-5, Cossura Candida, n.sp. (2116-52) 



1. Anterior end showing prostomium, two buccal segments and 

 first five setigerous segments, with basal part of median ten- 

 tacle, in dorsal view, x 47. 



2. Posterior end, showing three anal filaments, in dorsal view, 

 x47. 



3. Parapodium from a median segment, showing setae, in 

 posterior view, x 151. 



4. Distal end of a longer seta, seen from the side, x 583. 



5. Part of a spinous seta, seen from the front, x 583. 



Fig. 6. Poeobius meseres Heath. 



Anterior end with palpi and tentacles, in dorsal view, x 26.5. 



PLATE 2 



Figs. 1-5, Myriochele gracilis, n.sp. (2175-52) 



1. Entire animal, removed from tube, showing large ova 

 through body wall in middle region of body, seen in right 

 lateral view, x 13. 



2. Entire tube, with animal enclosed, x 13. 



3. Uncinus from anteromedian region, seen from the side, x 

 5610. 



4. Uncinus seen from the distal end, showing thick fang, x 

 5610. 



5. Anterior end of another specimen, taken out of a tube, with 

 everted tentacles, seen from the left side, x 20. 



Figs. 6, 7, Onuenia fusiformis collaris, new subspecies (2142-52) 



6. Uncinus with shaft and distal teeth, seen from the side, x 

 5840. 



7. A similar uncinus seen from the front, x 5840. 



PLATE 3 



Figs. 1-6, Artacamella hancocki, n.sp. (2233-52) 



1. Anterior end through first five setigerous segments, in left 

 lateral view, x 40. 



2. Anterior end, showing proboscis-like organ, oral aperture 

 and tentacular processes, in dorsal view, x 40. 



3. Abdominal uncinus, seen from the side, x 3400. 



4. Abdominal uncinus, seen from the front, x 3400. 



5. Thoracic uncinus, seen from the side, x 1925. 



6. Thoracic uncinus, seen from the front, x 1925. 



PLATE 4 



Protis pacifica Moore (1613-48), attached to dorsal, left valve of 

 Cyclopecten sp., x 12. 



