New species of calymenidae from Scotland and Ireland. (Cephalic segmentation and sutures in trilobites. - Further remarks on platycalymene and the segmental relations of trilobite eyes. - Indications of cephalic sutures in trinucleidae and harpedidae. - Cranidial muscle scars of 'Illaenus' proles var. shelvensis Whittard.) [Reprints from the Geological Magazine and Nature.]
Lamont, Archie.
Hertford,
[1938-1951]