DESGKIPTIONS OF SPECIES. 127 



CCELOHELIA WAGNERIANA Sp. TIOV. 



PI. XII, figs. 19 to 19b. 



There is a single specimen of this species in the collection of the Wag- 

 ner Institiite. Its size and general appearance are shown by PI. XII, figs. 

 19 and 19a. The calices are primarily an-anged in two rows, opposite each 

 other, one on each side of the branch. The budding may sometimes be 

 double, but the general bilateral symmetry of the branch is not lost. The 

 calices are elliptical, the longer axis being parallel to a plane passing verti- 

 cally between the two rows of corallites. Measurements of two calices are 

 as follows : 



The amount of elevation of the calicular margins and the distance 

 between the calices are shown by the figm-es. Costse are present only just 

 below the calicular margin and are very insignificant. The outer surface of 

 the corallum has suffered some erosion, so its ornamentation can not be 

 stated positively. Apparently it is smooth; if it was ornamented, the orna- 

 mentation almost certainly consisted only of minute granulations. The septa 

 are so slightly exsert that they can be described as not exsert. Three com- 

 plete cycles of six systems. Very much thicker at the wall than interioi'ly. 

 The margins fall quickly to the bottom of the calices; they are transversely 

 slightly undulate, and exhibit minute dentations. There are three sizes of 

 septa; on the inner margin of each of the six of the middle size, deep down 

 in the calice, is a delicate erect palus. There are no pali before the third 

 cycle of septa and apparently also none before the first cycle. The septal 

 margins are very nicely preserved, so there is no reason to doubt that the 

 above is the connect distiibution of the pali. The sides of the septa are 

 covered by many very small, tall granulations, which seem to luxA-e flattish 

 or roundish tenninations. The bottoms of the calices do not fill up with 

 secondary deposit. I could find absolutely no vestige of a columella; there- 

 fore a corallite cavity communicates directly with the one below it, and, to 

 be sure, the calices are very deep. The principal septa could not be seen 

 to meet even in the bottom of the calice. 



