Subgenus Boreohyale Bousfield & Hendrycks, 2002

Type species. Hyale frequens Stout, 1913

Diagnosis. Antenna 2, peduncular article 5 and flagellum weakly setose. Maxilla 1, palp uniarticulate. Coxae 1–3 lacking posterior marginal cusp. Gnathopod 2, carpal lobe lacking or vestigial. Uropod 1, peduncle with strong distolateral spine. Uropod 3 uniramous. Telson, lobes without apical spine(s).

Species composition. P. (Boreohyale) camptonyx (Heller, 1866); P. (B.) grenfelli (Chilton, 1917); P. (B.) hiwatarii Bousfield & Hendrycks, 2002; P. (B.) jarrettae Bousfield & Hendrycks, 2002; P. (B.) kajiharai (Hiwatari, 2003); P. (B.) lamberti Bousfield & Hendrycks, 2002; P. (B.) latimana (Hiwatari, 2003); P. (B.) loorea (Barnard, 1974); P. (B.) magnaocularis sp. nov.; P. (B.) maroubrae (Stebbing, 1899); P. (B.) misakiensis (Hiwatari, 2003); P. (B.) neorionensis Bousfield & Hendrycks, 2002; P. (B.) nuda (Hiwatari, 2003); P. (B.) oclairi Bousfield & Hendrycks, 2002; P. (B.) oculata Bousfield & Hendrycks, 2002; P. (B.) pumila (Hiwatari & Kajihara, 1981); P. (B.) rubra (Thomson, 1879); P. (B.) seticornis Bousfield & Hendrycks, 2002; P. (B.) triangulata (Hiwatari, 2003); P. (B.) wilari (Barnard, 1974) .