PLATE 55. A–K Bohemoharpes ungula (Sternberg, 1833); Type horizon uncertain, Kopanina Formation (Ludlow), type locality Dlouhá hora, near Beroun, Czech Republic, Natural History Museum Prague, Nos L 6123, 6124 and Czech Geological Survey, Nos JV 508, and JV 1390. A–H L 6123 a dorsal exoskeletons of a large cephalon and a small partial cephalon; A, dorsal view of the two cephala, B lateral view and C anterior view of large cephalon and D dorsal view of small partial cephalon. Dorsal views of brim perforations: G and H, close to the sagittal line and E and F, on the lateral part of brim just anterior to the alae. E and G are from the brims of smallest cephalon and F and H from that of the largest cephalon. I, L 6124, a dorsal exoskeleton of partial thorax and cephalon, thorax slightly enrolled, dorsal view. J–K, JV 508 and JV 1390, dorsal view of a detached and attached pygidium respectively. L–O Bohemoharpes ruderalis (Hawle & Corda 1847) type horizon and locality, upper layers, Praha-Dvorce(?),Lochkov Formation (Lochkovian), Czech Republic, dorsal exoskeletons of a cephalon, the Natural History Museum Prague No. L 19112. L dorsal view, M anterior view, N lateral view and O dorsal view of brim perforations. This specimen was first figured by Prantl & Přibyl 1954 on pl 4, fig. 3. Scale bars shown represent 1 cm unless otherwise indicated.