PLATE II. 



Fig. 1. The body of Syringosphtsria tuberculata, Duncan. Natural size. 



2. A portion magnified, showing the tabulation on the surface of the body and monticules, 



and a few pores. 



3. The body of Syringospkceria porosa, Duncan, shown in outline, with a portion indicating 



the numerous pores. Natural size. 



4. A portion magnified, showing numerous round pores with canal openings and the inter- 



mediate surface with indistinct tubulation. 



5. The body of Stoliczkaria granulata, Duncan, shown in outline. The upper portion of 



details is of the size of nature, and indicates the numerous irregularly disposed granula- 

 tions. The lower portion is in part magnified to show the numerous granulations, the 

 tube openings on their top and their radiating tubulation on their sides and in the 

 intervening space. 

 6. The body of Syringosphceria monticularia, Duncan, variety aspera. Natural size. 



7. A portion magnified, showing the openings of tubes on the monticules and the other 



tubulation, the black lines being interspaces between stout, crooked tubes. 



