588 PALAEONTOLOGY OF ILLINOIS. 



* 



Genus CH^^OMYA, M. and H. 

 CHJBNOMYA MONEHAHA, Swallow sp. 



PI. 27, Fig. 3. 



Allortema? Hinnehalia, SWALLOW, 1858. Trans. St. Louis Acad. Sci., Vol. I, p. 193. 

 CJiancmya Minnelialta-, MEKK and BAVDKN, 1858. Pal. Up. Mo., p. 43. 



Position and locality Upper Coal Measures ; Clinton county, Illi- 

 nois. 



Genus CAKDIOMOKPHA. 

 OAEDIOMOKPHA MISSOURIENSIS, Slmm. 



PL 27, Fig. 8. 

 Cardiomorpha Missouriensis, SHUJIAKD. Trans. St. Louis Acad. Sci., 1860. Vol. I, p. 207. 



Position and locality Abundant in roof shales and limestone over 

 Coal No. 3 ; Colchester, Illinois. 



Genus EKTOLIUM, Meek. 

 ENTOLIUM AVICULATUM, Swallow sp. 



PL 20, Fig. 12. 



Peeten aviculatus, SWALLOW, 1858. Trans. St. Louis Acad. Sci., Vol. I, p. 215. 

 Enlolium awndatum, MEEK. Final Eeport on Neb., p. 189; pi. 9, fig. 11, Or-J. 



Genus LIMA, Bruguiere. 

 LIMA RETIFERA, Slium. 



PI. 26, Fig 2. 

 Lima retifera, SHUMARD, 1858. Trans. St. Louis Acad. Sci., Vol. I, p. 214. 



Position and locality Coal Measures, Springfield, and various other 

 localities in Illinois, in both upper and lower coals. 



