203 



DiNI. 



p. 17, 18, plate 1, fig. 1, the front f of lower jaw, reduced to one- 

 half its natuTol size^ from |a| concretion in the Styliola hed 

 ( Genesee) in Blacksmith gully, Bristol Centre, N. Y. — VITI e. — 

 Note. The tooth bearing edge has no teeth but is like a knife 

 edge, like Din, terrelli but the jaw is stout like Din. herzeri. 

 Newberry's specimens (described 1873), were from the Huron 

 shale ( Oenesee) of Ohio. See also a new Dinichthys from the 

 Portage of West N. Y, by E. N. S. Eingueberg, Am. Jour. ScL, 

 Vol.27, June, 1884.— F///^. 



Diphyphyllum adnatum. 



(Hall, 35th An. Rt. Mus. 1882.) 

 Oollett's Indian Rt., 1882, 

 page 303, plate 27; figs. 7,8.— 

 Falls of Ohio, Corniferous 

 limestone. — Villa. 



The genus is Lonsdale's. 

 Hall's description of the spe- 

 cies on page 458 of the 35th 

 An. Rt. is as follows : " Oor- 

 allum sub-cylindrical, simple 

 or compound, increasing by 

 lateral gemmation, fre- 

 quently in contact for their 

 entire length ; exterior with 



very regular annulations and concentric striae; longitudinal 

 striae distinct ; diameter varying from 12 to 20 mm. ; calyx bell- 

 shaped, depth about 10 mm. ; number of lamellae 50, of uniform 

 thickness, alternate lamellae continuing to internal wall ; space 

 inclosed by vertical wall, 3 mm. in diameter." 



Diphyphyllum apertum. (Hall. 35th An. Rt. Mus. N.Y.? 



1882) Oollett's Indi- 

 ana Rt. 1882, page 

 303, plate 27, fig. 6, 

 side view, plate 28, 

 fig. 4, back view look- 

 ing into calyx; fig. 5, 

 calyx. Falls of Ohio. 

 Corniferous lim e - 

 TI.Z7 stone. — VIII 



a. 



Ind. /^2 



