PLATE 75. 
Fig-1- 
Fig- 2. 
Dalmania pleuroptyx. 
Page 
356 
1. The specimen is a cast preserving a part of the head, the axis and one lateral lobe of the 
thorax, and a part of the pygidium. From the condition of the specimen, it cannot be 
positively referred to this species, though there can be little doubt of its identity. 
Dalmania nasutus. 
2. The inner side of the crust of a pygidium, showing the thickened border and a part of the 
posterior spine. 
362 
Fig. 3-6 
3 
Dalmania tridens. 
361 
The underside of a portion of the head, showing the cavity of one eye and the extension of 
the frontal process. 
4. A fragment of the lower surface, showing the marginal limb on one side and the frontal 
process. The abruptness of the junction of the process with the marginal limb, as re¬ 
presented in the figure, is due to an imperfection in the specimen at that point. 
5 & 6. Fragments of the marginal limb and the frontal process frm the lower side, with 
portions of the surface enlarged. 
