VIII. Mexican Unbellifers : Arracacia dugesii. 



IX. " " Arracacia hemsleyana. 



X. " •' Arracacia longifeduficulata. 



XI. •' " Arracacia cegopodoides. 



XII. •• " Arracacia tolucensis. 



XIII. •' " Arracacia tolucensis. 



XIV. Fossil Cycads : Ramentaceous investiture of genus Cycadella. 

 XV. " " Cycadella reedii s'p. nov. 



XVI. " " Cycadella beecheriaHa sp. nov. 



XVII. " " Cycadella wyomingensis sp. nov. 



XVIII. " " Cycadella knoivltoniana sp. nov. 



XIX. " *' Cycadella kno7vltoftia?ta, showing internal 



structure. 



XX. " " Cycadella knowltoniafia^ showing internal 



structure. 



XXI. " " Cycadella knightii sp. nov. 



XXII. Nodular limestone in shales beneath Smith Point limestone, 

 Smith Sound, NF. 



XXIII. Characteristic appearance of massive weathered layers of Smith 



Point limestone, Smith Sound, NF. 



XXIV. Smith Point limestone as exposed on Smith Sound, NF. The 



Olenellus fauna occurs in the upper beds. 



XXV. Cleaved Cambrian shales, Currie quarries, Smith Sound 

 (bedding shown by lines of nodules). 



XXVI. Contact of Cambrian with Random terrane of Algonkian. 



TEXT FIGURES. 



1. Eryngium cryptanthum. 



2. " lofigipetiolattim. 



3. " rosei. 



4. " sparganophylliim. 



5. Tauschia nudicaulis. 



6. " decumbens. 



7. " seatoni. 



8. " vagina ta. 



9. Diagrammatic section of Cambrian rocks on Manuels Brook. 



10. Diagrammatic vertical section of Cambrian formations on Man- 



uels Brook. 



1 1 . Diagrammatic sketch of Hanford Brook and Mill Pond, show- 



ing relations of the St. John quartzite to the Hanford for- 

 mation. 



iv 



