the scientific name for thetypical genus of Pachycephalinae, founded in 1826 byVigors and Horsfield. It is an extensive group of thick-headedshrikes, containing about fifty species, ranging in the Indianand Australian region, but not in New Zealand. The type is P. gutturalis, Lath., of Australia. (`Century.') Theyare singing-birds, and are called Thickheads (q.v.),and often Thrushes (q.v.). The name is from the Greek pachus, thick, and kephalae, the head.