Synoptic revision of the Silurian fauna from the Pentland Hills, Scotland described by Lamont (1978) Author Candela, Yves Author Crighton, William R. B. text Palaeontologia Electronica 2019 19 A 2019-05-31 22 2 1 45 http://dx.doi.org/10.26879/868 journal article 10.26879/868 1094-8074 10961588 Haswellia macrothalma (Haswell, 1865) ; described on page 250. Lamont did not provide any indication of locality or horizon. Haswell (1865) mentioned the species macrothalma from his locality I, but did not describe the specimen he figured on plate I, figure 13.