PLATE 78. 
l. 
704. 8. Calymene camerata. 
(Pag. 337.) 
1 a. A specimen preserving eleven articulations of the thorax, and a large part of the cephalic shield. 
1 b. The central part of the cephalic shield, the lateral portions being separated at the suture. 
1 c. Another cephalic shield, in which the central portions are better preserved. 
1 d. The caudal shield. 
1 e. Front view of the cephalic shield, from which the marginal rim is broken, showing the arched projec¬ 
tions from the eye to the glabella. 
2 . 
705. 3. Cytherina alta? 
(Pag. 338.) 
2 a, b, c. Individuals of different size. 
2 d. An enlargement of the surface, showing the papulose character. 
3 a , 
b. 
PlIRAGMOCERAS? 
For description, see Appendix. 
