KONGL, SV. VKT. AKADEMIENS IIANDLINGAH. BAND 32. N:0 I. 



137 



Plate XII. 



Acantholithus sp. indet. \>. 114. 



Fig. 1. Portion of the surfacc, from tbo stratuiu a of ' Fig. 2. Longitudiiial sectioii of tLc same. '^/i. 

 WJsby. lä/i. I 



Coccoseris Ungerni Eiciiwald p. 107. 



3. Tortioii of surfacc of specimeu from Grosscn- 



liof, Estland. 'Vi. 



4. The same natural size. 



5. Surfacc, nat. size, i)robably a variety of tlic 



former, from Sutlep, Estland. 



Fig. 6. Transverse section of tiiis, acruss a caliclc, with 



its central (columellar) and septal baculi. '■"'/i- 



■•' 7. Longitudinal section passing through two ca- 



licles. ^"/i. A narrow stripe of coenen- 



cliyma betweeu them. 



Coccoseris megastovia Mac Coy p. 108. 



Fig. 8. 



9. 



Surface of specinien from .\pplcth\vaite, West- 

 raoreland dclineated from a positive cast in 

 plaster taken on tbe negative original, ^"/i- 

 Presented by Lector S. L. TÖRNQUIST. 



Variety minor from Hulterstad, Öland. '^/i. 



Fig. 10. Tbc same from the same locality, weatbered 

 specimen. '^/i. 

 » 11. Surface in natural size of another specimen, 

 same locality. 



Coccoseris micro[)orus Eichwald p. 107. 



Fig. 12. Surfacc in nat. size, of a specimen from Bork- 

 bolm, Estland. 

 » 13. Longitudinal section of tbe same. ^"/i- 

 s 14. Portion of tbe surface magnitied. 'Vi- 



Fig. 15. Portion of the original specimen of Eicu- 

 waIjD's Heliolites raicroporus from Maals 

 near Hapsal, now in tbe Museum of the 

 University of St. Petersburg, kindly com- 

 municated by Professor Inostranzeff. 



Coccoseris micraster n. p. 109. 

 Fig. 16. Surface in natural size, specimen frum Öst- I Fig. 18. Longitudinal section showing two calicles and 



björka, Dalecarlia. 

 » 17. Tbe same magnitied. '%. 



tbc bacuJar coenenchyma. 



71. 



Protarcea vetusta J. Hall p. 111. 



Fig. 19. A somewbat weatbered specimen from Rich- 

 mond, Indiana. 



i2/i- 



Fig. 20. Transverse section of specimen from same 

 locality, -"/i, four calicles sectioned. Observe 

 tbe great similarity with tig. 6. 



