DESCRIPTIONS OF SPECIES. 



165 



rather fine, crowded together. Those corresponding to the first, second, and 

 third cycles coarser than those con-esponding to the fom-th and fifth cycles. 

 Those costaj con-esponding to the fourth and fifth cycles, fine, acute, present 

 a sen-ate appearance when seen from the side, composed of a single row of 

 gi-anules; those corresponding to the first, second, and third cycles of septa 

 consist in their lower portion of a single row of granules, but in their upper 

 portion of a double row. Branching by trifurcation. In old specimens the 

 costse of the upper portion are wider and more granulated. Occasionally 

 a septum of the fourth cycle will be fused distally to one of the second 

 cycle, and a single costa will correspond to the two septa. The perfora- 

 tions in the intercostal furrows are very close together. There may be an 

 extremely thin pellicle of epitheca just above the place of attachment. Epith- 

 eca rudimentary or absent. Wall rather dense, vesiculated. Columella 

 very well developed, spongy, vesiculated. 



Greater diameter of oalice 

 Lesser diameter of ealice . 

 Height of corallum 



Mm. 

 U 

 8.5 

 18.5 



Mm. 

 13 

 8.3 

 17.5 



Mm. 

 23 

 16.5 

 28.5 



Localities. — Grcggs Landing and Woods Bluff, Alabama; Newton, Missis- 

 sippi; Wautubbee Hills, Mississippi; 9 ^ miles south of Hickory, Mississippi; 

 Indian Mound, 2^ miles east of Newton, Mississippi; 1 mile south of 

 Hickory, Mississippi; 2 miles southeast of Hickory, Newton County, Mis- 

 sissippi; 8 miles west of Enterprise, Clarke County, Mississippi; 8 miles 

 southeast of Hickory, Newton County, Mississippi; Wheelock, Robertson 

 County, Texas; Smithville, Texas; 1 mile southeast of Mason Springs, 

 Maryland. 



Geologic occurrence. — Bells Landing, Woods Blufi^, and Lower Claiborne beds. 



Figured specimens. — Uuited Statcs Natioiuil Muscuiu ; and from collection of 

 T. H. Aldrich, also in United States National Museum. 



The subflabellate form of this species easily separated it from the 

 other Eocene species of Balanophyllia in the United States. 



I have vei-y carefully compared our American material with the 

 descriptions and figures of B. desmojihyUnin given by Mihie-Edwards and 

 Haime, and when in London, in January, 1898, I had the opportunity to 



