Pteri. 812 



cut in Three Springs, at end of Eoyer's ridge, and at end of 

 Sandy ridge, Orbisonia, all in OrisJcany, sk VII. Also, by 

 White as found south of Carpenter's Point on the Delaware 

 (G6, 123) in Onskany shale; and in iStormville shale and 

 limestone (132, 134), Lower Helderherg.— VI, VII— This is no 

 doubt Avicula textilis, var. arenaria, Hall, Pal. N. Y., Vol- 

 3, 1861, p. 465, pi. 110, f. 2, which is named, but not figured 

 on p. 70 of this Dictionary above. 



Pterinea undata. See Ambonyclila undata. II c. 



Pterinea ? Conrad's fig. 4, on page 68 of this Diction- 

 ary, above, is improperly called Avicula emacerata. (R. P. W.) 



Pterinea ? Rogers' figure 617 on page 69 above ia 



wrongly placed with Emmon's fig. of J.2;i:c«^Z^ insueta (R. P.W.) 



Pterinea ? Broad- winged and of Hamilton aspect, is 



the only fossil form discovered in the Marcellus limestone beds 

 of Bedford and Fulton counties, Pa. (J. J. Stevenson, T2, p. 

 84), VIII h. In Perry Co. at New Bank tavern, south of New 

 Bloomfield,Claypole obtained two Pterineas (spec. 115-5) from 

 Chemung lower heds. In Huntingdon Co., on Shy Beaver creek,. 

 Pterineas are numerous in the lowest 70' of the 300' sandy 

 shales under the Chemung lower {Allegrippus) conglomerate. 

 In Bedford Co., north of Leroy, Spec. 70-10 came from Che- 

 mung strata. From the Chemung beds on the river opposite 

 Bloomsburg, Columbia Co., came Spec. (000) 2150. In Law- 

 rence Co., White's AVapwallopen section, along the river above 

 Berwick, the Chemung heds^ No. 41 (400' thick) have Pterinea^ 

 Nucula^ NuGulana^ Spirifera^ Leiorhynchus., and many 'other 

 fossil forms scattered through them^iG7, p. 197.) All the above 

 are VIII g.— In McKean Co. Wilcox hill, west of depot Pter- 

 inea^ Strophomena^ and Orthoceras appear on Spec. (0) 3285 

 from Pocono sandstone^ X. — In Crawford Co. Pteriena and 

 many other Chemung shells may be got, at the Meadville iron 

 bridge, from the Cussewago sandstone. (Ql, 165). — X. 



Pterinopecten ? atticus. H. S. Williams, [Bulletin No- 



41, 1887, U. S. Geological Survey, page 35, 

 plate 3, figs. 10, 11, enlarged twice^ right and 

 left valves, from the Portaae shales^ Attica, 

 11 N. Y— F/Z/f. 



