108 REPORT OF THE 



i 

 Locality — Unknown. Supposed to be with the last. 



219. Athyris, sp ? 



Considerably resembles Terebratula rhomboidea. Phillips. 

 Also has m some affinities with McChesney's A. obmaxima 

 from the Keokuk limestone 



Locality— Grand Rapids. 



220. Athyris Roysii (?) DeKoninck. 



Closely related to smooth specimens of this species. (Op. 

 cit , PI. XX, Fig. 1 ) 



Locality — Grand Rapids. 



221. Athyris, sp ? # 

 Locality — Grand Rapids. 



222. Athyris, sp ? 

 Locality — Grand Rapids. 



223. Athyris, sp? 



Locality — Grand Rapids. 



225. Athyris? sp ? 



Bears considerable relationship to Terebratula Roysii, var, Le- 

 veille, (DeKoninck, PI. XXI, Fig. 1,) but it is somewhat 

 broader and more quadrate. It resembles A. obuia McChes- 

 ney, (p. 81,) but differs in having its two valves equally 

 convex, and in its faint radiating lines. It is less sinuate 

 than A. differentius, McChesney. 



Localities — Grand Rapids, Pt. au Gres. 



229. Athyris? sp ? 



Locality — Ferris' limekiln, 2 miles north of Jackson. 



224. Terebratula sacculus, var. hastata (?) DeKpninck. 



Locality — Grand Rapids. , 



226 Terebratula subretziseforma (?) McChesney. 



It is broader proportionally than this species from the Kas- 

 kaskia limestone, but otherwise it agrees closely. The cor- 

 respondence is also very good with T. subtilita, Hall, (Stans- 

 bury's Rep., p. 409,) but our shell is smaller. It is smaller, 

 thinner and less deeply sinuated than specimens of T. subti- 

 lita, Hall, from the coal measures of La Salle, 111. 



Locality — Grand Rapids. 

 22?. Terebratula, sp? 



Locality — Grand Rapids. 

 228. Terebratula, sp ? 



Locality — Grand Rapids. 



