Dalmanites acacia Schwarz 



Fig. I, 2 Cephala showing the finely granulate surface, small 

 eyes, nuchal spine and slight anterior projection 

 3, 4 Lateral and dorsal views of thorax and pygidium, 

 showing the length of the erect thoracic spines 

 Locality: calc-nodules of Pebble island, West Falkland 



Dalmanites falklandicus Clarke 



Fig. 5 A normal cephalon with large eyes, short cheek spines and 

 coarsely pustulose pygidium 

 6 Thorax and pygidium of this species 

 Locality: Fox bay, West Falkland 



