Orthoc. 



552 



DaWi 



Orthoceras laqueatum, Hartt. Dawson's Acadian Geol- 

 ,23 ogy, 1868, page 311, fig. 128 ; with about 26 regular 

 flutings ; like O. gesneri, De Kon., except for its 

 roundness, smooth flutes, and wider septa spaces (^ 

 diam.) Carh. lime. Windsor, N. S,—XIII? 



Orthoceras longicameratum. (Hall, 1867, 2( th An. Et.; 



Pal.N.Y.Yol. 



;: 3, 1859, page 



.^ 



. 343, plate 70, 



^, J fig. l,:pl. 71, f. 



^^^ J 1 to 5 ; remark- 



' ^^IM ^^able for long 



< ^' &^<j:...^,^^m^. outer cham- 

 ber, and high 



H^^y^rNy^'lh rU 70.4: arched septa. 



Albany and 



Schoharie Cos. in Pentemerus limestone (L. Held.) strata. — In 

 Pennsylvania, Olaypole-s specimen 6-12 (000, 11,801), from 

 Clark's mill, N. W. of New Bloomfield, Perry Co. Pa., upper 

 shales of Lower Eelderlerg. Also doubtfully in Montour Co., 

 at Limeridge quarry, in the upper half of the Stormville (Z. 

 Jleld,) limestone. G7, pp. 101, 261.— F/. 



Orthoceras mephisto. Clarke, Bull. 16, U. S. G. S. 1885, 



2. p. 29 pi. 3, fig. 2, magnified twelve 

 times ; minute shell, only yV ^^ i 

 ^3 inch long; smooth; body cham- 

 ber and 8 air chambers ; quite the commonest Orthoceras found 

 in the nodules (concretions) in the Genesee hlack shale of On- 

 tario Co., N. Y. Suggests the Hamilton 0. exile, Hall.— VIII e- 



Orthoceras montrealense, Billings. Geol. Canada, 1863, 



lU- — _«=— ^. /^ -sr. 



vine 



Clk B.16 



1^63, 



jpage 121, fig. 37 a, b. c, sections showing the siphuncle. 

 ^iferous sandstone. I. a. 



Cal' 



