104 EOCENE AND LOWER OLIGOCENE COKAL FAUNAS. 



The following table gives nieasuremeuts of several specimens : 



Specimen 2 is represented by PI. VITI, figs. 8 and 8a. The corallum wall 

 is solid and apparently is covered by a thin, firm, pellicular epitheca, that is 

 ap])lied to the wall in tiie same way as is the epitheca in Flabellnni. It has 

 this appearance, but there is not sufficient material well enough preserved 

 to determine the point positively. The outer surface of the corallum wall 

 usually shows several longitudinal undulations, there being more on the con- 

 cave than on the convex side. Besides these there are low rounded costpe. 

 There are some longitudinal raised stria^ or longitudinal rows of small low 

 granules on the outer surface of the corallum. Septa, in cross section (PI. 

 VIII, fig. 10), about 64, cycles and systems not very distinct. The first and 

 second cycles and some members of the third reach the columella space. 

 The members of the third cycle usually fuse by their inner margins to the 

 sides of those of the second, thus inclosing the members of the fourth cycle. 

 When members of the fifth cycle are present, those of the fourth will fuse to 

 the sides of those of the tliird, thus inclosing the members of the fifth. The 

 septal grouping does not seem to be absolutely regular, but the tendency to 

 form septal groups is well pronounced. The septa are thin, somewhat flexu- 

 ous near the center, thicker at the wall. All of them, excepting the youngest 

 members of each system (i. e., those of the fifth cycle and those of the fourth 

 cycle where none of the fifth is present), have distinct elongate ellijjtical or 

 clavate thickenings on their inner ends. These are probably pali. They are 

 arranged in two rather definite crowns. Septal faces granulated, no endo- 

 theca. Columella small, composed of a few more or less twisted ascending 

 laths, to wliicli the larger se[)ta fuse by their flexuous inner margins. 



Localities. — Ncw Jerscv, Philadelphia Academy label; near Squaukum, 

 New Jersey (Meek and Hayden), United States National Museum. 



Horizon. — -Shark River beds, probably Claibornian. 



Types. — Academy of Natural Sciences of Philadelphia; specimen in the 

 United States National Museum. 



I found one specimen of the species in the United States National 



