1923] NATURAL SCIENCES OF PHILADELPHIA 259 



Fig. 43. — Dorsal spatulate seta from V. (X 360) 



Fig. 44.— Uncinus from V. ( X 600) 



Figs. 45, 46. — Euchone magna. 



Fig. 45.— Spatulate seta from V. (X 360) 



Fig. 46. — Crochet from same. (X 360) 



Fig. 47. — Spirabranchus spinosus — Uncinus from XV. (X 440) 



Fig. 48. — Metaverinilia muUiannulaia — Uncinus from XXV. (X 440) 



