PLATE XXIX. 



Cystiphyli.um varians n. sp. 



Figs. 1, 2. Lateral view and calyx of a small Ibriii, the cup showing the incipient rays along the 

 surface of the cysts. 



Figs. 3, 4. Lateral view and calyx of a more robust form, the calyx showing the rays somewhat 

 strongly marked. York, Livingston county, N. Y. 



Fig. 5. Literior of the cup of a broader form, showing lai-ge cysts in the bottom, with incipient 

 rays along the outer part. Moscow, New York. 



Fig. G. View of the calyx of a small specimen, strongly marked with rays on the lower side where 

 no cysts are visible. The specim-rn had been thrown down while living, and con- 

 tinued to grow until the cup opens in the same direction as the base, or precisely in 

 the opposite direction from its earlier stages of growth. Moscow, N. Y. 



Figs. 7-9. Lateral, summit and basal views of a rapidly spreading specimen, showing small cysts 

 with strongly developed rays along their surfaces. York, Livingston county, N. Y. 



Fig. 10. Lateral view of an old specimen, tlie base of attnchment showing rootlets. Moscow, N. Y. 



Fig. 11. View of the opposite side of the preceding specimen; a portion of the coial has been cut 

 away to show the depth of the calyx and the internal structure. 



Fig. 12. An enlargement of the upper part of the preceding specimen, showing the obsolescent 

 radii traversing the cj'sts and also the internal cellulose structure of the corallum. 



Fig. 13. A longitudinal section of a specimen, showing the arrangement of the cysts in the form 

 of inverted cones. 



CySTIPHYLLUM CORRUGATUil 11. Sp. 



Fig. 14. Lateral view of a large specimen, showing the usual form but slightly compressed. Skan- 



eateles Lake, N, Y. 

 Fig. 15. Lateral view of a smaller specimen, showing incipient striations on the exterior, and well 



developed rays along the pustules in the interior of the cup. 

 Fig. 16. Section of the last, showing the arrangement of the cysts in the form of cups. Sknnea- 



teles Lake, N. Y. 



