EXPLANATION OF PLATES. 



^ PLATE I., Daimonelix circumaxilis. A quarry scene; three aspects, and a 

 Section of Daimonelix. Since the plate was made, the transverse stem has been 

 dug out, and the original specimen is now complete. 



PLATE II. A quarry scene, showing a Devil's corkscrew, Daimonelix, 

 nearly worked out. A caiion to the left. See same specimen in Plate III. 



PLATE III., Daimonelix circu?naxilis. Fig. i8, side view; Fig. 19, 

 viewed from above, showing corrugation on upper surface of coils; Fig. 20, 

 viewed from below, showing square-cut lower surface of coils; Fig. 21, the net- 

 work structure of Daimonelix, about natural size. 



N PLATE IV., Daimonelix carinata. Figs. 22 and 23, quarry scenes; Fig. 24. 

 same cleaned. Several sections are shown. 



NJ 



PLATE v.. Fig. 25, Daimo7ielix robiista, with section of the same showing 

 thick wall and tubes. 



Figs. 27, 28, 29, show the upper and lower surface of the coils of Daimonelix, 

 as well as a section of " post " and " coil " in 28. Fig. 30, section of Fig. 18, near 

 the great stem, showing eccentricity of coils. Fig. 31, smallest Daimonelix found, 

 smallest species found as yet. 



N PLATE VI., Undetermined sponge-like mass, with protuberances more in de- 

 tail in Figs. 33 and 34. 



324 



