114 



EOCENE AND LOWER OLIGOCENE CORAL FAUN^AS. 



On the outside and inside of the wall the trabecula?, forming the septa 

 are respectively inclined outward and inward. Very little of the septa is 

 extra mural. 



The character of the septal margins is variable. Those of the first, 

 second, and third cycles are usually entire, while those of the fourth cycle 

 are frequently dentate. The margins of the larger septa are usually entire; 

 of these occasionally a septum may have some dentations. Near the col- 

 umella, teeth are quite frequent. The smallest septa are usually dentate, 

 but occasionally one of these may have an entire margin. The teeth on the 

 inner ends of the large septa sometimes are paliform. There are no true 

 pali, however. A few dissepiments are present. Columella false, upper 

 surface papillate. Calicular fossa deep. 



Locality. — Moutgomcry, Louisiana. 



Geologic occurrence. JacksOlliail StagC. 



Types. — United States National Museum. 



Family OGULINIDJE Milne-Ed ward.s and Haime. 

 Geuu>< ASTROHELIA M.-Edw. and H. 



ASTROHELIA NEGLECTA sp. DOV. 

 PI. IX, flgS. 14 to 15. 



Coloin' ramose, branches subcylindrical, from 14 to 22 mm. in diame- 

 ter. Coenenchyma moderately thick, but not always very dense; surface 

 minutely granulate and covered to a great extent by slightly flexuous costo- 

 strisB; Corallites arranged in rather definite spirals; often constricted at the 

 calicular margin, lower part filling with secondary deposit. Calices rather 

 deep, subelliptical, diameter from 5 to 7 mm., distant from one-half to the 

 length of their diameters; margins rather prominent, openings inclined 

 toward the ends of the branches. Septa thin, not exsert, sides granulate, 

 upper portion of margins minutely dentate, lower 2)ortion tlnowu into 



