136 BULLETIN OF THE LABORATORIES 



usually a millimetre ( or slightly more ) wide, whereas the branches 

 of the American species have a width of .3 to .38 mm. 



LoPHOPHYLLUM PROFUNDA. Edwards and Haime. 



( ) 



In 1851, Edwards and rfaime published in Polyp. Terr. Pal., 

 under the name of Cyathaxonia profunda * a description of a coral col- 

 lected at Flint Ridge, Ohio, which curiously enough was overlooked 

 in preparing the catalogue of Flint Ringe fossils for the second vol- 

 ume of this bulletin. 



Curiously enough both Edwards and Haime, and McChesney 

 refer their species to Cyathaxonia, after Lophophyllum had been 

 already established. To us indeed the two genera seem to be very 

 distinct, but there is no doubt that the species here under considera- 

 tion is far more closely allied to Lophophyllum Konincki than to 

 Cyathaxonia cornu, the types of the two genera. In deference to the 

 opinion of those who have made a special study of these genera we 

 leave them separate, and refer our species to Lophophyllum as is the 

 American custom at present. We believe however the Z. proliferum 

 is only one of the many varations o{ L. profunda, and should give 

 place to the latter name. 



* " We know this species only by the interior cast ortts calyx. The cast shows that the 

 calyx was subeircular and deep ; as it is more developed ©n the side of the septal fossette we 

 think that the polyp was curved. The columnella is long and its transverse section sub- 

 elliptical , 24 principal lamellse quite large, well develojSed, alternate with an equal num- 

 ber of much smaller ones and arrange themselves aboiit the columnella in a somewhat 

 branched manner. Diameter of the calyx, 18 mm ; its depth:,15. " 



This is really a very g-nocl charat^terization of Ohrto specimens in the form in which 

 they are usually found. But after considerable pains we found a few specimens which pre- 

 served the fossil itself These in the last biilleMn we identified with Cyathaxonia 

 piioiii*EKA of McChesney. On Plate XII we figured the fossil itself, and on Plate II may be 

 found an illustration of the cast. 



