Note 64 — Chapter IV
Reading edition
“I think it is probable that these cervical sclerites represent the hindermost of the cephalic somites, while the band with which the maxillæ are united, and the genæ, are all that is left of the sides and roof of the first maxillary and the mandibular somites.”—Huxley, Anat. Invert. Animals, p. 403.