NON-IDENTIFICATION OF WHITE'S SPECIES. 2 



_ i •> 



while the secondaries do not extend more than one-third of this distance 

 and being, at their inner edges, curved toward the primaries, at times 

 apparently uniting with them. The fovea is indicated upon one side in 

 this section by a dwarfed primary septum and a very decided pinnate 

 arrangement of the neighboring ones, such as occurs in Aulacophyllum, 

 E. and H. Between the septa are seen the cut edges of the dissepiments, 

 most abundant in the outer area, gradually diminishing toward the center. 

 A more complete study of the internal structure will he made before 

 locating this species, hut sufficient has been pointed out here to show 

 that it is not the Chonophyllum which we have attempted to characterize. 



9. Chonophyllum vadum, Hall. 



Chonophyllwm vadum, Hall. Corals of the Niag. and Up. Held. Groups* 



1882, p. 6. 

 Hall. Geol. of Ind., 12th Rep., 1882, p. 272, pi. 15, 

 figs. 1-4. 



This species was thus originally characterized by Professor Hall : 



"Corallum simple, turbinate, straight or slightly curved, acute at the base, regu- 

 larly expanding to tbe calix ; exterior with numerous abrupt constrictions, and 

 fine concentric striae ; external cost« very distinct ; height 35 mm ; diameter of 

 calix 20 mm; depth ID mm; sides slightly concave ; a fiat space at the bottom 5 

 mm in diameter; number of lamella' 70, flat, and of nearly uniform size at the 

 margin, becoming thinner and alternating in size below ; the principal ones extend- 

 ing to the center, where they are twisted and very slightly elevated. 



" Formation "//</ locality. — Niagara group, Louisville, Kentucky." 



We have seen no authentic specimen of this species, and this descrip- 

 tion, based simply upon external characters, is far from being so satis- 

 factory as we could desire. With the exception of the " flat " septa in 

 the outer area, there is nothing about it to suggest the genus Chonophyl- 

 lum. The general form of the specimens figured and the thin angular 

 septa in figure 3 seem sufficient for their rejection from this genus. 



K>. Chonophyllum capax, Hall. 



Chonophyllum capax, Hall. 35th hep. X. V. State Mns. for 1881,1884, 



pp. H(M 1. 



Although not accompanied by any figures, the description of this 

 species is more complete, and it can more positively be asserted not to he 

 a Chonophyllum,. 



♦ Advi -I ts from the Thirty-fifth Rep. of the N, Y State Mus For 1881, 1884, p ii". 



