Ichthyophis monochrous, the Western Borneo caecilian or black caecilian, is a species of amphibian in the family Ichthyophiidae. It is endemic to northern Borneo and known from western Kalimantan (Indonesia) and Sarawak (Malaysia), likely occurring also in Brunei. It is a little-known species known from only a few specimens. It presumably inhabits tropical moist forest. Adults are likely subterranean. Description Ichthyophis monochrous is a moderately slender caecilian. The holotype measures in length and about in width. The head is long and has visible eyes. Tail is short (3.8 mm) but distinct. The skin has about 247 ring-shaped folds (annuli) and is strongly glandular. In life the specimen is reported to have been violet-brown in colour.) References monochrous Endemic fauna of Borneo Amphibians of Indonesia Amphibians of Malaysia Amphibians described in 1858 Taxa named by Pieter Bleeker Taxonomy articles created by Polbot Amphibians of Borneo