500 THE JOURNAL OF GEOLOGY. 



Lopliophyllwn sp. — Small specimens are somewhat similar to 

 L. proliferum, McChesney, but the species cannot be satisfactorily 

 referred to any described North American form. 



Stenopora sp. — This form is apparently new. 



Michelinia sp. — With smaller cells than any described form 

 known to me except M. concinna, Longsdale, from Russia. 



Fistidipora nodulifera (?). — Not identical if well preserved 

 North American specimens are without spines as described. 

 This may prove to be a Monticulipora. 



Rlwmbipora lepidodeudroides. — Well determined by a direct 

 comparison with authentic specimens of the North American 

 type. 



Aidopora sp. — The long straight cells give a greater resem- 

 blance to Syringopora than to the usual small creeping forms of 

 Aidopora, but the tabulae and connecting tubes of the former 

 genus are lacking. 



Monticidipora sp. — Dr. White informs me that an identical 

 form occurs in North America, where it has been referred to an 

 European species. 



Polycoelia sp. — No American form of this genus has been 

 described, though Shumard mentions one from Texas. 



Eocidaris hallianus (?), Geinitz. — Water worn spines agree 

 with this species so far as their character can be determined. 



Arcliceocidaris. — Three, or perhaps four, species are represented 

 by material too imperfect for positive determination. A. biangu- 

 latiis and A. triserratus are perhaps represented together with 

 another type of spine that cannot be satisfactorily referred. A 

 single interambulacral plate from Praia Grande, Rio Curua, may 

 belong with one of these three types of spines. 



Erisocri?ius (f) sp. — A single calyx appears to belong to this 

 genus. It is distinguished by great concavity of the base and by 

 ridges along the joints rising into spines at the angles. An 

 undetermined genus of crinoid is represented by a hexagonal, 



