Dalmanites sp. 



Fig. I, 2 Dorsal and profile views of a cephalon allied to D . 

 acacia and D . ocellus but departing in some 

 structural details. The upturned genal angles are 

 indicated in figure 2 

 Locality: from a calc-nodule sent to me by Prof. J. B. 

 Woodworth with the note that it was found by Dr 

 Thomas A. Barbour on the old beach of Lake 

 Titacaca at Viacha, BoHvia, elevation 13,500' A. T. 



Calmonia ocellus (Lake) 



Fig. 3, 4 Dorsal and profile views of a partly enrolled specimen 

 5, 6, 7 Three views of a coiled individual showing the char- 

 acteristic head, small eyes, sharply pointed thoracic 

 segments and a part of the pygidial fringe 

 Locality: Pebble island, West Falkland 

 8 An extended specimen incomplete at the pygidium 

 Locality: Mt Robinson range, Chartres river, West 

 Falkland 



154 



