EXPLANATION OF PLATES 211 



Fig. 



16 Frontal view of same, x 3 



17 Enlargement of reticulate surface, x 6 



18 Cranidium of a supposedly mature specimen, showing similar 



features, x 3 



19 Frontal view of same, x 3 



20 Lateral view of same, x 3 

 Pabbleo of group 5 



Remopleurides (Caphyra) linguatus sp. nov. 



p. 56 



21 Dorsal view of cranidium and right free cheek. The shading 



represents the glabella as too convex. (Compare fig. 23) 

 The free cheek was not found in the position, figured, x 3 



22 Lateral view of same, x 3 

 20 Frontal view of same, x 3 



24 Oranidium of the smallest specimen observed, x 4 



25 Lateral view of same, x 4 



26 Oranidium figured in a position to show the length and form 



of the tonguelike process of the frontal lobe, x 4 



27 Lateral view of free cheek, showing the delicate faceting of 



the eyes, and the rudderlike frontal doublure, x 5 



28 Thorax, the central part destroyed by weathering, x 2 



29 Enlargement of the pleurae, to show the fulcra! tubercles, x 5 

 Pebbles of groups 5-7 



