ỻygaid arian, 148.

Ỻygatrud Emys, [531].

Ỻyn Aerfen, [444].

— yr Afanc, 130, [689].

— ’r Arennig, 149.

— Barfog, 141–6, 245, [428], [429].

— y Bwch, 203.

— Coch, 125.

— Cwm Ffynnon Las, 132, 133: see Glaslyn.

— Cwm Ỻwch, 21–3, [430].