33 



Ceyptonymtjs (Cybele) brevicaitda. Aug., 1854. 



Pal. Scand., Plate xli.Pig. 14. 



The axis of the pygidium consists of 13 articulations ; 

 the first four have perfect rings with pleurae, the others 

 are notched at the sides without pleurae ; along its lateral 

 portions the axis is marked by 2 parallel rows of nodes. 



The pleurae are directed backward, being almost 

 parallel with a line drawn through the centre of the 

 axis ; their surface is smooth. 



Locality : Regions D. and E., Dalecarlise, Sweden ; 

 Neuenof, near Hapsal, Russia. 



Cryptonymus (Cybele) dentata. Esmark, 1832. 



Tbilobites dentata. Esmaek, Mag. for Naturvidensk., Vol. i, 

 P. 269. Pl. vii, Fis. 10. 



TrIL. DENTATU8, ASD T. PLICATDS. L. C. PaQES 139 AND 140. 



Pygidium smooth? — axis transversely striated, with 

 about 17 segments : they are obliterated in the middle of 

 the axis. 



Locality : Regions D. and E., Christiana, Norway. 



Cryptonymus (Cybele) Wcerthii. Eichwald, 1840. 



Syn. Zefhus Bellatulds. Volborth, 1847. Verhandl. de3 



Mineral. Gesellsch. zu St Petersburg, P. 10, ^l. i, 



Figures 1-4 



Cryptonymus Wcerthii. Eichwald, LETH.ffi;A Rossica, P. 14-16, 



Pl. liv, Fig. 17, 1860. 



Cephalic shield convex. The eyes are placed nearer 

 to the posterior margin than to the anterior margin. 

 The C. bellatulus has directly opposite characters. 

 The eye pedicles of this species are placed more to the 



