DESCRIPTIONS OF SPECIES. 



177 



rather wide, usually flattened or rounded in profile, may be acute, gi'anu- 

 late, branching by trifurcation. Wall nioderately thick, perforate, vesicu- 

 late. The epitheca may be rudimentary or fairly well developed. Some- 

 times these are simply encircling bands or slu-eds. Septa not so crowded 

 as is usually the case in the other species of the genus here considered, 

 in four complete cycles, and the fifth is appearing at the end of the 

 longer transverse axis of the calice. Those of the fourth cycle fuse to 

 the sides of the third. When there are members of the fifth cycle, those 

 of the fifth fuse to the sides of the fourth ; prolongations from their fusions 

 meet in front of the septa of the third cycle or fuse to the sides of this cycle. 

 The first and second cycles, and a prolongation from each septal group 

 about the members of the third cycle reach the columella. No dissepiments 

 could be found in the interseptal loculi. Columella vesiculate, fairly well 

 developed. 



Longer transverse axis of calice 

 Shorter transverse axis of calice 

 Height of corallum 



Mill. 

 12.5 

 10.5 

 18 



Mm. 



8.5 



7 

 8.7 



3fm. 

 16 

 14 

 23 



Localities. — Viclisburg and Red Blufi", Mississippi; near Rosefield, Cata- 

 houla Parish, Louisiana. 



Geologic occurrence. VicksburgiaU StagC. 



Types. — In the collection of the Philadelphia Academy of Natui-al Sciences. 



PI. XX, fig. 15, is drawn from one of the original specimens of Conrad. 

 The other specimens figured are in the United States National Museum. 



The most characteristic feature for typical B. caulifera, after its form, 

 is its srQall nipple-like pedicel. 



Balanophyllia oaulifeea var. multigranosa var. nov. 

 PI. XX, figs. 19 to 20. 



From the specimens figured, one would not suspect that this is only 

 a variety of JB. caulifera. It was some time before I coidd consent to believe 

 it, but such it certainly is. 



The variety about to be described occurs in the Red Bluff horizon, 

 and is the immediate ancestor of typical B. caulifera as it is found in the 



MON XXXIX- 



-12 



