AMAZONIAN UPPER CARBONIFEROUS FAUNA. 499 



spire and rounded whorls perhaps does not belong to this 

 genus. 



Platyceras nebrasce?isis. — A single small specimen agrees with 

 Dr. White's figure of this species in Wheeler's report. 



Dentalium sp. — Too imperfect for positive identification. 

 Ornamentation like that of D. meekiannm, Geinitz, but larger 

 and more rapidly expanded. 



Bellerophon. — Of the three species of this genus, one, from a 

 direct comparison of specimens from Danville, 111., can be posi- 

 tively identified with B. carbonarins, Cox ; another is probably 

 identical with B. crassus, Meek & Worthen, while the third, a 

 beautifully cancellated, non-carinate little species, is apparently 

 new. 



Polyzoa. — All the identifications in the above table are given 

 with doubt, because no opportunity has been had for a compari- 

 son with specimens nor, in some cases, with figures. The specimens 

 referred to Synocladia biserialis, Fenestrella shiimardi, and Glcni- 

 coneme trilineata agree well with the figures seen ; those referred 

 to Polypora snbmarginata are probably distinct if that species is 

 correctly figured ; Fenestrella intermedia and Ptilodictya carbonaria 

 are identified from descriptions alone, while a species of Polypora 

 and of Fenestrella cannot be referred satisfactorily to any 

 described form known to me. The former bears considerable 

 resemblance to Synocladia virgidacea as illustrated, but appears to 

 differ generically, while the latter is somewhat like a species from 

 the Ohio Corniferous [P. gilbcrti, Meek). A species of Fenes- 

 trella agrees well with some from Nebraska referred to, but prob- 

 ably not identical with, F. plebeja, McCoy. A peculiar ramose 

 form closely resembling, in general appearance, RJiombipora lepi- 

 dodendroides, but with Escarella-like cells which show it to be a 

 Polyzoa, cannot be satisfactorily referred. 



Campophyllnm sp. — The Brazilian specimens appear to be 

 identical with a small undetermined coral from Kansas City, Mo., 

 and also with a Subcarboniferous form from Marion Co., Iowa, 

 that has been referred to Zaphre?itis spinulosa, Hall. 



