811 



Pteri. 



Pterinea gibhosa. See Monopteria gibbosa. — XIII. 



Pterinea longispina, (Avicula longispina,) Hall, Geol.i 

 Vni.of, 3 HaiiU7, Fourth District, N. Y., 1843, pa^e 



^ -"^262, fig. 117, 3. Hamilton and 



Chemung formations. VIII {?, g. 



Pterinea orhicularis. See Ambo- 

 nychia orbicularis. //, c. 



Pterinea rugosa, wrongly called Avicula rugosa^ on page 

 69, above. (R. P. Whitfield's corrections, Jan., 1889.) 



Pterinea suhorhicularis. See Aviculopecten. VIII g. 



Pterinea subplana ? Wrongly called Avicula suhplana^ 

 Rogers, on page 70, above. (R. P. Whitfield.) 



Pterinea textilis, quoted by C. E. Hall. (MS. Rt. 1875) and 



VII. 



\'^ 





Mi//, Pa/.M 

 Mol. \\\.m/, 





-c>-^ 



-»■ 













X s 



I. C. White (T3, 119) as found in Huntingdon Co., Pa., at KR. 



