100 The Ottawa Naturalist. [December 



regarded as identical with Dalmanella emacerata (Hall), but which 

 Miller, owing to his more intimate knowledge with Cincinnatian 

 fossils, recognized as distinct. The type of this species evidently is 

 the specimen represented by figures 1 a, b, and c on plate VIII of the 

 Ohio Paleontology. This specimen Meek describes as "of the same 

 form as one of the typical examples." Under the heading: Locality 

 and position, on page 111, he gives its horizon as "Cincinnati group, 

 Cincinnati, Ohio, at an elevation of 250 feet above the Ohio; this 

 being the typical form, like Prof. Hall's fig. 1, in the Regents' Report," 

 the reference being to the 15 th Regents' Report on the State Cabinet 

 of Natural History of New York. The elevation mentioned is 50 feet 

 above the top of the great range of strata in which different varieties of 

 Dalmanella multisecta (Meek) are more or less common. Here it 

 occurs in the lower part of the Fairmount member of the Maysville 

 group, immediately above the Strophomena planoconvexa Hall 

 horizon. It formerly was well exposed at this horizon at the Avondale 

 power house, on Hunt street, and at many other localities within the 

 limits of Cincinnati. Figure Id, on the same plate, also from Cin- 

 cinnati, is a typical specimen of Dalmanella fair mount ensis Foerste; 

 the same species occurs at the top of the hills on the western side of 

 the river at Hamilton. The various specimens represented by figures 

 2 a-g, on the same plate, probably are representatives of the species 

 which is so abundant in the Waynesville member of the Richmond in 

 southern Ohio and neighboring states, and which later (Paleontologist 

 No. 4, 1879) was described by James as Orthis jugosa. It evidently 

 was the intention of Meek to describe these specimens from a higher 

 horizon as a separate species, probably owing to the suggestions of 

 James who supplied him with the various brachiopoda described by 

 him from the Cincinnatian localities. Before final publication, how- 

 ever, he evidently abandoned this idea. 



Specimens (Figs. 5 A,B, C) identical with Hebertella alveata 

 Foerste occur in the upper part of the argillaceous Richmond, but 

 these specimens are associated with others in which the median de- 

 pression is confined to a limited area near the beak, as in Hebertella 

 occidentalis Hall. 



Dinorthis subquadrata (Hall) occurs both in the cherty Richmond 

 and in the immediately underlying part of the argillaceous Richmond. 



Most of the specimens of Platystrophia occurring in the upper 

 part of the argillaceous Richmond have an aspect somewhat similar 

 to that of Platystrophia clarksvillensis Foerste (Fig. 13), from the 

 Waynesville and Liberty members of the Richmond in southern Ohio 

 and adjacent states, however, an occasional specimen resembling 

 Platystrophia acutilirata (Conrad) (Fig. 14) from the Whitewater 

 member of the Richmond, also occurs. 



