Oligo. 



494 



Oligocarpia (Sphenopteris) Jlagellaris, 



Lesq. Geo. Pa. p. 



862, pi. 18, fig. 1, 1^, from the South Salem anthracite bed at 

 Pottsville, Fa. Coal Flora, p. 267. No other specimen of this 

 species had been found by Lesquereux up to 1880. — XIII. 



Olivanites angularis. See Nucleocrinus angularis. 



OUacrinus tuberosus. L. and Cass. Keyes, Amer. Philos. 

 X', ^ Society, Phila. Vol. 25, No. 128, 1888, p. 242, 



fig. 3, growing on Platyceras equilaterum. 

 Suhcarhoniferous limestone^ XI 



Onchus deweyi, &c. See page 495, 



PS XXV. 



Oncoceras constrictum. (Hall, Pal. N. Y. Vol. 1, 1847. 

 lUc. ^.,,mfm!fmr\ Trenton and Black river beds.) Em- 



mons, Am. Geol. Vol. 1, p. 148, part 2, 

 pi. 12, fig. 2. Shell short, narrowed 

 near the mouth, and rapidly tapering 

 towards the other end, where it is 

 .E:TTi.AG.^'''*'"^^^sii^^^»*^i2 always imperfect, and apparently cut 

 or broken off. Trenton liwsstone. — II c. 



Oncoceras trentonense. Cyrtoceras trentonense, Em- 



( I \..m^^'''^V^K\ ^^^^5 Geol. Second District, N. Y. 1842, 

 " ""^ ' p. 296, fig. 107, 2. Trenton. (Trans- 



ferred hither from page 181 of this 

 Dictionary, in deference to R. P. Whit- 

 field's MS. corrections, Feb. 1889.) — 

 He. 



