P»LA.TE I. 



Page. 

 Fig. 1. Ophileta complanata, var. nana 17 



1. Ao upper view of a specimen, natural size, as seen lying in the matrix. 

 1 a. The same, enlarged. 



1 b. Profile view, enlarged. 



Fig. 2. Raphiktoma? kotuliformis 18 



2. View of upper side, natural size. 



2 a. Profile view of same. 



2 b. Under side of same, magnified. [In the specimen, the umbilicus is filled with rock, 



though its subangular margins are exposed.] 



Fig. 3. Kaphistoma'? trochiscus 19 



3. Upper side, natural size. 



3 a. Profile. 



3 6. Under side, enlarged. [The uniLilicns is filled with rock in the specimen, but its 

 margin is clearly seen.] 



Fig. 4. CoNOCOR YPHE KiNGii. Upper view, natural size 20 



[The specimen is accidentally compressed so as to spread out the posterior extremities of 

 the cephalic shield more than is natural. Broken edges of the crust are also in 

 the figure wrongly made to look like small nodes at the ends of the segments of 

 the mesial lobe.] 



Fig. 5. Paradoxides ? Nevadensis. Shows upper side of a part of thorax and pygidiuni 23 



Fig. 6. Favosites (undt. sp.) 27 



Fig. 7. Atrypa reticularis 38 



7. Dorsal view. 

 7 a. Side view. 



Fig. 8. Edmondia ■? Pinonensis 46 



8. Side view of a large specimen, natural size. 

 8fl. Opposite view of a smaller specimen. 



Fig. 9. SpiRiFEa Pinonensis 45 



9. Dorsal view, natural size. 

 9 a. Profile view of same. 



9 b. Ventral view of same. 



Fig. 10. Prcetus denticulatus 49 



10. The glabella embedded in the matrix (enlarged two diameters). 



10 tt. Pygidiuni, enlarged two diameters. 



10 h. One of the thoracic segments seen in profile (enlarged two diameters). 



Fig. 11. Dalmanites (undt. sp.) - 48 



11. A monld of the pygidiniii. 



11 a. Another specitneu of same. 



