Mecistocephalus hebrides

Chamberlin originally described this centipede under the name Dasyptyx hebrides.^[4] In 2003, authorities suggested that Dasyptyx is a junior synonym of Mecistocephalus.^[5] Authorities now regard Mecistocephalus as the valid name for Dasyptyx.^[6]

This species can reach about 62 mm in length and features 49 leg pairs. The dorsal surface of the body is brownish with a pale longitudinal line down the middle. A network of lines and spots cover the back and sides. The head and forcipules are chestnut. The head is 1.6 times as long as wide. The middle piece of the labrum is wider along the anterior margin than the posterior end. The mandible features sixteen lamellae.^[4]

The first article of the forcipule features two teeth, with the distal tooth shaped like a cone and much larger than the more proximal tooth. The tooth on the second article of the forcipule is either tiny or absent, and the third article features a tooth that is larger but still very small. The ultimate article of the forcipule features a bulge at the base. The groove on the sternites is forked with the two branches forming an obtuse angle. The basal element of each of the ultimate legs features very numerous small pores that are absent from a narrow band along the inner edge.^[4]