400 PROCEEDINGS OF THE ACADEMY OF [April, 



Fig. 38 — Tips of three of the same more highly magnified ; b and c, middle 

 and ventral setae respectively, X 250; d, a ventral seta witli peculiarly 

 bifid tip, X 440. 



Fig. 39 — Distal portion of an average notopodial from X, X 5G. 



Fig. 40— Tip of the same, X 250. 



Nemidia microlepida — figs. 42-44. 



Pig 42 — Dorsal aspect of cephalic region with base of protruded proboscis; 



left ventral tentacular cirrus only represented, X 17. 

 Fig. 43 — Anterior aspect of parapodium X, X 24; a, posterior aspect of 



tip of the neuropodium, X 33. 

 Fig. 44— Elytron from somite XVII, X 24. 



Plate XXXI — Nemidia microlepida — figs. 45, 4Q. 



Fig. 45 — Complete neuropodial seta from LXXX, X 250. 

 Fig. 46 — Worn neuropodial seta as usually found, from a posterior segment, 

 X 2.50. 



Poli/noc{?) remigata — figs. 47-51. 



Fig. 47 — Incomplete and distorted head region, X 17. 



Fig. 48 — Anterior aspect of a middle parapodivmi without sotie or cirri, 



X24. 

 Fig. 49 — End of a notopodial from middle region, X 250. 

 Fig. 50— Neuropodial from middle segment, X 33. 

 Fig. 51 — Tip of a neuropodial, X 2.50. 



PolijnoeC!) filamentosa — figs. 52-56. 



Fig. 52 — Anterior aspect of parapodium XXIII, without seta; or noto- 



cirrus, X 24. 

 Fig. 53— Tip of a long notopodial .seta from XVIII, X 250. 

 Fig. 54— A short notopodial from XVIII, X 33. 

 Fig. 55 — An average neuropodial seta from XVIII, X 33. 

 Fig. 56— Tip of the same, X 250. 



Polynoe{1) aciculata — figs. 57, 58. 



Fig. 57 — A much retracted parapodium williout seta- or neurocirrus but 



with notocirrus, anterior view, X 24. 

 Fig. 58 — End of a dorsal neuropodial seta, X 2,50. 



Polynoe{1) renotubulata — figs. 59-64. 



Fig. 59 — Head lacking some of the appendages, X 9. 



Fig. 60 — Posterior aspect of parapodium from beliind middle of body, 

 without seta», and showing the greatly elongated nephridial papilla («). 

 X 9. 

 Fig. 61— First elytron, X 9. 



Fig. 62 — Average neuropodial seta from XXIII, X 33. 

 Fig. 63— End of the same, X 2.50. 



Figs. 64a and 646 — Side and face views respectively of end of a ventral 

 neuropodial from XXIII, X 250. 



Aphrodita armifera — figs. 65, 66. 



Fig. 65 — Dorsal finbriated organ from XII, X 56. 

 Fig. 66 — Two dorsal papilla?, X 250. 



Figs. A and B — Free-hand sketches of tips of average neuropodial and 

 notopodial setse from somite X of Harmolhoe yokohamiensis. 



Plate XXXII — Aphrodita armifera — figs. 67-75. 

 Fig. 67— Head from above, X 9. 



Fig. 68 — Medium sized notopodial seta from ventral fascicles of X, X 24. 

 Fig. 69 — -Tip of the same showing the asperities wliich are largest near the 



end, X 56. 

 Fig. 70 — -Two neuropodial setse of the dorsal row of X, one in profile and 



another in face view, X 56. 

 Fig. 71 — Neuropodial seta of middle row of X, X 56. 



