Tlie Fauna of the Maxz'illc Limcsfonc. 375 



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

 Maxville limestone. It occurs in association with Seniiniila 

 siihqiiadrata and like it in great numbers in the shale nodular 

 zone and very commonly in the shaly partings of the upper 

 zone. 



Horizon and locality. — Maxville limestone. 

 Upper zone : Gladstone Mills, Thompson Residence, below 

 Thompson Residence, White Cottage ; Smith Chapel, Logan. 

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

 dle of Cut No. 6, Mouth of Hough Hollow, Mt. Perry- 

 Fultonham ; Kroft Residence, Kroft Bridge, White Cot- 

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

 Lower zone: Bridge Gully, Cut No. 3, Cut No. 4, Cut No. 5. 



Mt. Perry-Fultonham ; West Jockey Hollow, Rushville. 

 Undetermined zone : Middle of Cut No. 6, Mt. Perry-Fulton- 

 ham ; Harper Shaft, Olive Furnace. 



MARTINI > CONTRACTA— Meek and Worthen. 



1861. Spirifera glabra var. contracfa. Meek and Worthen, Proc. AcacL 

 Nat. Sci. Phil., p. 143. 

 Chester Hmestone : Pope County and Chester, Illinois. 

 18G(3. Spirifer glaber var. coniracta. Meek and Worthen, Geol. Surv. 

 111., Vol. II, p. -298, pi. -23, hgs. 6a, b. 

 Chester group : Pope Count}' and Chester, Illinois. 

 1874. Spirifer (Mariinia) glaber var. coutracta. White, Prelim. Rept. 

 Inv. Foss., p. 20. 

 Carboniferous (Coal Measures); Camp Cottonwood, Nevada. 

 1877. Spirifer (Martinia) glaber var. cantracta. White, U. S. GeoL 

 Surv. W. 100 Merid., Vol. IV, p. 136, pi. 10, figs. 2a-c. 

 Carboniferous: Camp Cottonwood, Nevada. 

 1888. Spirifer glaber. Herrick, Bull. Denison Univ., Vol. IV, pi. IL 

 fig. 15. 

 Chester limestone : Ohio. 

 1891. Spirifera (Martinia) contractus. Whitfield, Ann. N. Y. Acad. 

 Sci., Vol. V, p. 583, pi. 12, figs. 17-19. 

 Maxville Hmestone : Ohio. 

 1894. Spirifera contracta. Keyes, Mo. Geol. Surv., Vol. V, p. 83. 

 Kaskaskia limestone: Chester, Illinois. 



