153 



Corn. 



Cornulites proprius. See Appendix. Vh. 

 Cornulites ? (? Ye^z^ac^Zi^J^^) Roger's Geology of Penn- 

 sylvania, 1858, Vol. 2, page 822, fig. 

 627. A curious animal form of un- 

 known character, a slender cone, 

 composed of rings, transversely 

 striated, is occasionally met with in 

 the Surgent {Clinton) ore sandstone above the fossil ore bed of 

 Frankstown in Blair county. It seems to diifer from HalPs 

 Cornulites Hexuosus, (Rogers). — V a, 



Cornulites ? (? Tentaculites) Hall, page 137, fig. A, 1. 



Y^ , Salina (or Onondaga) formation; difi*ering from the 

 Niagara species in being smaller, straight, and with 

 upper edges of rings thinner and not horizontal, but 

 depressed on one side uniformly, making a sort of 

 continuous groove. Newark, N. Y. — Vc. 

 Cornulites Jiexuosus, Hall, 1852, Pal. N. Y. Vol. 2, Clhi- 

 ton, Va. — G. B. Simpson finds twenty-eight specimens of it 

 in Fellows' collection of 1876, from theblufi' on Little Juniata 

 below covered bridge, above Tyrone forges, Huntingdon Co., 

 marked 211-8 (00, p. 232), in Trenton limestone,— II c. 



Crania corrugata. (Orhicula corrugata.) Hall, page 108, 



fig. 38, 3. Niagara formation. Ge- 

 ology of Western District of New 

 York, 1843, page 108, fig. 38, 3 ; sur- 

 face strongly wrinkled and covered 

 with finer concentric wavy lines ; 

 muscle-scar on under valve very 

 distinct, and often extending half 

 way down to the circumference. Fos- 

 sil easily recognized; several cases of 

 both valves being found nearly at- 

 tached to each other. Rochester, Lockport, &c. — Vh. 



Crania hamiltoniae. (Hall, 1860, 13th An. Rt.; Pal. 

 Viir ....^ 17. la^ N. Y. Vol. 4, p. 27, plate 3, figs. 17, 18. 

 ^^^ Marcollus.) In Pennsylvania, Perry Co. 

 ^Iff j (F2, xiii) in Hamilton formation. Clay- 

 1i||li pole's collections (000, 1888) Specimens 

 ^% 5 162, 163, 164, 171, at Barnett's mill, upper 

 V- Pl.a: slates; llO-(l), Brick field, S. W. of New 



