1905.] NATURAL SCIENCES OF PHILADELPHIA. 553 



iVIost of the specimens are sexually mature and have the posterior 

 region distended with eggs or sperm. A couple of immature examples 

 35 mm. long have parapodia of the usual form, but the distinction 

 between genital and pregenital regions is slight and there are no 

 swimming setae. 



Goniada annulata is a quite common species from Halibut Bank, in 

 the Gulf of Georgia, northAvard to Chatham Strait. There it occm'S in 

 282 to 293 fathoms at station 4,264. The type comes from station 

 4,235 in Behm Canal, where in 90 fathoms the species occurs at the least 

 depth recorded. 



Explanation of Plates XXXIV, XXXV, XXXVI. 



(Unless otherwise expressly stated all setse figured are from somite X.) 



Plate XXXIV. Aphrodita negUgens. 



Fio;. 1. — Hall' of the exposed portion of a ventral neuropodial seta. X 56. 

 Fig. 2. — Tip of an average hooked notopodial seta. X 82. 

 Aphrodita parva. 



Fig. 3. — Head from above. X 24. 



Fig. 4. — Posterior view of right parapodium of X. X 24. 

 Fig. 5. — Ends of three neuropodial setse; a, spurred and bearded seta from 

 middle series ; b, bearded seta without spur from ventral series ; and 

 c, spurred seta without beard from the same. All X 250. 

 Fig. 6. — Bearded neuropodial seta. X 250. 

 Fig. 7. — End of a hooked notopodial seta. X 360. 

 Euphrosyne bicirrata. 



Fig. S. — End of a middle neuropodial seta. X 250. 



Fig. 9. — Part of a long slender notopodial from a posterior row. X 82. 



Fig. 10. — End of a short, smooth and bifid notopodial from the anterior row. 



X 250. 

 Fig. 11. — End of a serrate bifid notopodial seta. X 250. 

 Fig. 12. — Two gills and the middle cirrus (mc) from somite XII. X 24. 

 Euphrosi/ne horfensis. 



Fig. 1.3. — End of an average neuropodial seta. X 250. 



Fig. 14. — End of a smooth-spurred notopodial seta from the posterior row. 



X 2.50. 

 Fig. 15. — Serrate bifid notopodial seta. X 250. 

 Rg. 16. — Four gills from somite XII. X 24. 

 Eunoe depressa. 



Fig. 17. — A neuropodial seta from the middle of the bundle of somite V. 



X 98. 

 Fig. IS. — End of a middle notopodial seta from X. X 98. 



Pl.\te XXXV. Eunoe depressa. 



Fig. 19. — Posterior view of parapodia from X. X 15. 



Fig. 20. — A middle elytron. The larger papillEe are sho-mi as circles, the 

 small horny ones are indicated on a part of the surface by dots and 

 short lines. X 9. 

 Antinoe macrolepida. 



Fig. 21. — The head from al)ove. X 6. 



Fig. 22. — .\n average neuropodial seta, X 56; a, tip of the same, X 250. 

 Fig. 23. — End of an average notopodial seta. X 56. 

 Hohlepida viagiia. 



Fig. 24. — Head from above, showing the much folded first right elj'tron in 

 place. X 6. 



