I9l6. No. I o. THE LOWER CAMBRIAN HOLMIA FAUXA. 



67 



a. Early Prtt/as/n'sstage t Paraprotaspis/, 

 cf. pi. VI, fig. I. 



6. yepionic stage, cf. pi. VIII, fig. 2. 



f. Early iifonic stage, cf. pi. VI, fig. 3. 



d. Late iieanic stage, c{. pi. VI, ng. 4—5. 



e. Epiiebic stage, cf. pi. VI. fig. 10— ri. 



Fig. ir. Six stages in the ontogenetical development of Holmia Kjertdfi LxRS. In outline trom 



original specimens. In the original specimen of the early neanic stage U) it can not clearly 



be seen, how the frontal lobe continues in the palpebral ones. 



