3 Of whom they, overcome, were deprived
Of > By
4 Of their proud beauty, and the one moiety
moiety > half
5 Transformed to fish, for their bold surquidry;
surquidry > presumption, arrogance
6 But the upper half their hue retained still,
hue > appearance, form
7 And their sweet skill in wonted melody;
wonted > [their] habitual, accustomed