PLATE 4 

 PUPILLID AND OTHER MINUTE GASTROPODS 

 Most figures enlarged 12 times 



Figs. A, B, C. - Punctum minutissimum (Lea); umbilical, apertural, and spiral 



views, respectively. Peoria loess, "The Rocks" section, 1 mile SE of 



bridge on Ohio River at Shawneetown, Illinois, in Union County, Kentucky. 



Enlarged approximately 12X. 

 Fig. D. - Carychium exile canndense Clapp; apertural view. Basal zone Peoria 



loess, SE} SW} sec. 26, T. 4 N., R. 3 E., Fulton County. Enlarged approx- 

 imately 12X. 

 Fig. E. - Vertiio milium Gould; apertural view. Basal zone Peoria loess, SE} SW} 



sec. 26, T. 4 N., R. 3E., Fulton County. Enlarged approximately 12X. 

 Fig. F. -Vertiio hubrichti Baker; apertural view. Peoria loess, NE corner SW} SW{ 



sec. 17, T. 18 N., R. 10 W., Cass County. Enlarged approximately 12X. 

 Fig. G. - Gastrocopta holzinieri (Sterki); apertural view. Peoria loess, NE corner 



SWi SW{ sec. 17, T. 18 N., R. 10 W., Cass County. Enlarged approxi- 

 mately 12X. 

 Fig. H. - Gastrocopta pentodon (Say); apertural view. Peoria loess, SE} SW} sec. 



26, T. 4 N., R. 3 E., Fulton County. Enlarged approximately 12X. 

 Fig. I. -Vertigo alpestris ouihtoni Pilsbry; apertural view. Morton loess, SW} NE} 



NE} sec. 16, T. 30 N., R. 1 W., Marshall County. Enlarged approximately 



12X. 

 Fig. J. - Gastrocopta procera (Gould); apertural view. Peoria loess, NE corner SW} 



SW} sec. 17, T. 18 N., R. 10 W., Cass County. Enlarged approximately 12X. 

 Fig. K. - Vertigo modesta (Say); apertural view. Peoria loess, SE corner SW} NW{ 



sec. 17, T. 18 N., R. 10 W., Cass County. Enlarged approximately 12X. 

 Fig. L. - Gastrocopta contracta (Say); apertural view. Peoria loess, SE corner SW} 



NW} sec. 17, T. 18 N., R. 10W., Cass County. Enlarged approximately 12X. 

 Figs. M, N, O. - Hawaiia minuscula (Binney); spiral, apertural, and umbilical views, 



respectively. Peoria loess, SE corner SW} NW| sec. 17, T. 18 N., R. 10 W., 



Cass County. Enlarged approximately 12X. 

 Fig. P. - Columella alticola (Ingersoll); apertural view. Peoria loess, NE corner SW} 



SW} sec. 17, T. 18 N., R. 10 W., Cass County. Enlarged approximately 12X. 

 Fig. Q, R, S. -Strobilops labyrinthica (Say); umbilical, apertural, and spiral views, 



respectively. Roxana silt, Gale section, center sec. 33, T. 14 S . , R. 3 W., 



Alexander County. Enlarged approximately 12X. 

 Fig. T. - Gastrocopta armifera (Say); apertural view. Woodfordian terrace silts, SW 



corner NW| sec. 23, T. 7 S., R. 4 W., Pike County. Enlarged approximately 



10X. 

 Fig. U. - Pupoides albilabris (Adams); apertural view. Peoria loess, Irish Grove 



section, center NE} sec. 25, T.19N., R. 5W., Menard County. Enlarged 



approximately 12X. 

 Fig. V. -Pomatiopsis scalar is Baker; apertural view. Peoria loess, Enion section, 



SE corner NW} sec. 33, T. 4 N., R. 3 E., Fulton County. Enlarged approx- 

 imately 7|X. 

 Fig. W. - Pupilla muscorum (Linne); apertural view. Peoria loess, Banner section, 



NW} NE} sec. 10, T. 6 N., R. 5 E., Fulton County. Enlarged approximately 



12X. 



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