. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. RAYMOND: NOTES ON THE ONTOGENY OF PARADOXIDES. 231 study these specimens, I supposed them to be the young of that species. That they do not belong to that species is, however, shown convincingly by the eyes. The adult of P. rugulosus has the palpebral lobes touching the glabella at their anterior ends and reaching the occipital furrow behind, while in the adult of P. spinosus the eye is much shorter, and does not reach either the glabella or the occipital furrow. Barrande has figured (Loc. cit., pi. 12, fig.