Paleontolos^y of the Citiri?i?iati Croup. 65 



Locality. — Cincinnati. 



Remarks. — This species is founded upon some specimens in 

 the collection of the late Mr. U. P. James. They had been 

 considered by him as fucoids, but the presence upon the outer 

 surface of well-defined markings has caused them to be re- 

 ferred to the Spongida. Whether the form is congeneric with 

 Cvatliopliycus is perhaps a matter of doubt. But the different 

 state of preservation of the Utica slate species, and this one, 

 may account for the variation. This is preserved in a calcar- 

 eous matrix, while the others occur in a fine-grained black 

 .slate at Utica, New York. The species presents also a resem- 

 blance to the forms of Raiiffcllia, Ulrich, 1889. 



Genus 9. — CniROSPOXCri.\, S. A. Miller, 1889. 



" General form hand-like, or somewhat like a compressed 

 goblet ; composed of internal filamentous or fibrous substance, 

 which is covered with a thin, lobed, vesicular parenchyma." 

 Fastened to the bottom by an expanded base ; above, forming 

 a flattened, obconcoidal cup, with deep sulci down each side ; 

 hollow ; skeleton vesicular or porous ; spicules supposed to 

 resemble those of Brachiospongia. (N. Am. Geolog}^ and 

 Palaeontology, 1889, p. 156.) 



Remarks. — This is an indefinite and poorly defined genus. 

 The one species from the Cincinnati group referred to it is 

 C. faberi, but the t>-pe is C. ivcnti, from the Trenton, near 

 Frankfort, Kentucky. 



I.— C. FABKRi, vS. A. Miller, 1889. 



" This species is founded upon a calcareous fragment of the 

 parenchyma, about one-third of which is shown in the figure 

 [not here given]. It is thin, and belonged to the side of a 

 large, hollow specimen. The semi-elliptical lobes are nearl}- 

 equal in size, and regularly distributed in rows over the sur- 

 face. The surface is reticulated with fine papillae, presenting 

 to the naked eye the appearance of a bryozoum." (Ibid, pp. 



156, I57-) 



Locality. — Cincinnati, O. 



Remarks. — This species, like the genus, is obscure. It was 

 founded upon a fragment, and would be almost impossible to 



