Tlic l-auna of the Ma.vz'illc Liiiwsfoiic. 375 



This shell is one of the four abundant forms found in the 

 Alaxville limestone. It occurs in association with Sciiiiiinhi 

 subquadrata and like it in great numbers in the shale nodular 

 zone and very commonly in the shaly i)artings of the upper 

 zone. 



Horirjoii and locality. — Alaxville limestone, 

 Upper zone: Gladstone Mills, Thompson Residence, below 

 Thompson Residence, White Cottage ; Smith Chapel, Logan. 

 Shale-nodular zone: Cut Xo. 5, Upper end of Cut No. 6, Mid- 

 dle of Cut Xo. 6, Mouth of Hough Hollow, Mt. Perry- 

 Fultonham ; Kroft Residence, Kroft Bridge, White Cot- 

 tage ; Stimmel Residence, Maxville ; Smith Chapel, Logan. 

 Lower zone: liridge Cully, Cut Xo. 3, Cut Xo. 4, Cut Xo. 5,, 



Mt. I'erry-h^dtonham ; West Jockey Hollow, Rushville. 

 Undetermined zone: Middle of Cut Xo. 6, Mt. Perry-Fulton- 

 ham; Harper Shaft, Olive Furnace. 



MARTINI CONTRACTA— Meek and Worthcn. 



lS(il. Spirifcra gkdva var. contracla. Meek and Worthen, Proc. Acad. 

 Xat. Sci. Phil., p. 14;l 

 Chester limestone: Pope County and Chester, Illinois. 

 l8G(i. Spirifcr glabcv yar. contracta. Meek and Worthcn, Geol. Sury. 

 Ill, Vol. II, p. -iflH, pi. 2:\ figs. 5a, b. 

 Chester group: Pope County and Chester, Illinois. 

 l.*^74. Spirifrr {Marliiiia) (jtid^cr var. contracta. White, Prelim. Rept. 

 Iny. Foss., p. ■_'<!. 

 Carboniferous (Coal Measures): Camp Cottonwood, Nevada. 

 1S77. Sfirifcr (Maiti)iia) glabcr yar. caiitracta. White, U. S. Geol. 

 Surv. W. UHi Merid., Vol. IV, p. bW, pi. 10, figs. 2a-c. 

 Carboniferous: Camp Cottonwood, Nevada. 

 18f<S. .Spirifcr gtatuv. Herrick, Bull. Denison Univ., Vol. IV, pi. 11, 

 lig. lo. 

 Chester limestone : Ohio. 

 IS'.H. Sf^irifcra {Martinia) contractus. Whitlicld, .\nn. X. V. .\cad. 

 Sci., Vol. V, p. 08;^, pi. l-J. hgs. 17-10. 

 Maxville limestone : Ohio. 

 18114. Sf^irifcra contracta. Keye?, Mo. Geol. Surv., Vol. V, p. 8:1 

 Kaskaskia limestone: Chester, Illinois. 



