THEIR USE IN CORRELATION 95 



PLATE 1 



Figs. 1.-2. — lllinites elegans sp. nov. holotype, maceration 490-A Slide 5, McCleary's Bluff coal 

 bed, Wabash County, Illinois. Fig. 1 — oil immersion photomicrograph. Fig. 2 — 

 same specimen water immersion photomicrograph showing trilete mark. Specimen 

 dimensions are 51.4 X 63 microns. 



Fig. 3. — /. unicus sp. nov. holotype, maceration 494 Slide 15, Shoal Creek coal bed (?), Wa- 



bash County, Illinois, illustrating bladder ornamentation, body, and trilete mark. 

 Specimen dimensions are 42 X 63 microns. 



Fig. 4. — /. unicus sp. nov. maceration 574 Slide 23, Shoal Creek coal bed, Bond County, Illinois, 

 dimensions are 44.1 X 65.1 microns. 



Fig. 5. — Punctati-sporites latigranifer (Loose) S. W. and B., 1944, maceration 536-A Slide 



2, Shoal Creek coal bed (?), Franklin County, Illinois, dimensions are 69.3 X 60.9 

 microns. 



Fig. 6. — P. joveatus sp. nov. holotype, maceration 603-B Slide 6, No. 2 coal bed, Fulton 

 County, Illinois, dimensions are 73.5 X 73.5 microns. 



Fig. 7. — P. reticuloides sp. nov. holotype, maceration 579-A Slide 1, No. 2 coal bed, Bureau 

 County, Illinois, dimensions are 50.4 X 52.5 microns. 



Fig. 8.— P. latigranifer (Loose) S. W. and B., 1944. 



Fig. 9. — P. guasioarcuatus sp. nov. holotype, maceration 625-A Slide 2, Willis coal bed, 

 Gallatin County, Illinois, dimensions are 86 X 100.8 microns. 



