BULL. GEOL. SOC. AM. 



VOL. 8, 1896, PL. 34 



i Efflj 



18 



Daemonelix Irregular 



Figures 17 and 18. — Nearly complete specimens. 



Figure 19. — A complete specimen. These specimens were found in the middle beds. 



20 2B 



23 24 es 26 



Daemonelix Regular 



Figure 20. — Free spiral (from Eagle crag). 



Figure 21. — Free spiral ending in enlargement (in National Museum). 



Figure 22.— Free spiral ending in three spherical enlargements and one small process. 



Figure 23. — Free spiral ending in transverse trunk or " rhizome." 



Figure 24. — Spiral and axis and transverse trunk. 



Figure 25. — Free spiral with two transverse trunks. 



Figure 26. — Massive free spiral with three transverse trunks. 



Figure 27.— Example of twin screws. 



Figure 28.— Complex Daemonelix, showing two spirals, one free, the other coiled around 



an axis, together with numerous spurs or processes of various forms and sizes, the 



upper whorl being surrounded by a crown of such spurs. 



DAEMONELIX IRREGULAR AND REGULAR 



