Trinchesia foliata (Forbes & Goodsir, 1839)
Cuthona foliata (Forbes & Goodsir, 1839)
Low water spring tides on rocky shores, and shallow sublittoral. On or near its hydroid prey, including Abietinaria abietina (EML), Sertularella polyzonias (EML), S. gayi (EML), Tubularia spp. (EML), Obelia geniculata (EML), Halecium spp. (EML) and Dynamena pumila (EML). Simultaneous hermaphrodite. Broad ‘C’ shape spawn masses  May to August.
- In addition to five red, orange, or brown marks on C. foliata, a sixth transverse one at front of head connecting oral tentacles.
- Much yellow on rhinophores and oral tentacles, and a yellow longitudinal streak on body between rhinophores.
Body (excluding appendages)