Abstract
Descriptions are given of 16 species of cestode found in Hertfordshire birds.The taxonomic position of the genera Choanotaenia Railliet, 1896; Anomotaenia Cohn, 1900; and Paricterotaenia Fuhrmann, 1932, is discussed in detail.A new species Anomotaenia verulamii, n.sp., from the Song Thrush (Turdus ericetorum) is described.A new species Paricterotaenia albani, n.sp., from the Starling (Sturnus vulgaris) is described.A new species Paricterotaenia mariae, n.sp., from the Robin (Erithacus rubecula) is described.A total of 18 new host records and 23 new records for this country are reported.