FIGURE 18. 1, 2: Hemiarges hendersoni (Lamont, 1948) from the Deerhope Burn, possibly the upper part of the Deerhope Formation; 1: specimen NMS G.1979.45.2, figured by Lamont on plate XXX, figures 17, 18; 2: handwritten label with information on the specimen. 3–5: Bruxaspis dealgach (Lamont, 1978) from the Deerhope Burn; 3: handwritten label with information on the specimens; 4, 5: specimen NMS G.1979.77.45.2 (cephalon, (4)) and specimen NMS G.1979.77.45.1 (pygidium (5)) from the Lamont Collection, figured by Lamont on plate XXX, figures 19 and 20. 6: Dudleyaspis lothiana (Lamont, 1948) from the Bavelaw Inlier, possibly from a small quarry near Bavelaw Castle, horizon unspecified; specimen from the British Geological Survey collection GSE14487, a latex cast is reproduced by Lamont on plate XXX, fig. 21. Image BGS © UKRI 2018 reproduced with the kind permission of the British Geological Survey, Photo P835160 from GB3D Website, http://www.3d-fossils.ac.uk/tou.html, released under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (http://creativecommons.org/licences/by-nc-sa/3.0/). 7–10: Aytounella scotica Lamont, 1978, from the Deerhope Burn, Wether Law Lin Formation; specimen NMS G.1979.77.37, external mould of the glabella (7) as figured on plate XXXI, figure 1, and view of the handwritten label (8) glued onto the sample; 9, 10: handwritten label (recto and verso) discussing the affinity of the species. Scale bars: 10 mm (figure 8); 2 mm (figures 1, 4, 6); 1 mm (figures 5, 7).