PLATE Vb. 



HoMALONOTUS VaNUXEMI. 

 Page 11. 

 Pis'. 1. Dorsal view of a fragment of a very large individual retaining the thorax entire and portions of 

 eleven thoracic segments. The dorsal portion of the thorax has been removed by exposure to 

 the weather, but the remaining parts retain their normal convexity. The pygidium is slightly 

 distorted in the original, but is represented in the figure with its natural proportions in order 

 to allow the restoration in outline of the wanting- parts. In this restoration the character of 

 the cephalon is derived from a single fragment obtained at Port Jervis, Orange county. 

 Fig. 2. Profile of the same, showing the convexity of the body, the extremely long and broad articu- 

 lating surfaces of the thoracic segments, and the abrupt slope of the post-axial area. 

 Lower Helderberg group. Kingston, Ulster county. 



