PLATE II. 
1. The body of Syringospharia tulerculata, Duncan. Natural size. 
1. A portion magnified, showing the tubulation on the surface of the body and monticule^ 
and a few pores. 
3. The body of Spring ospharia 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. 
e 
5. The body of Stoliczkaria granulata, Duncan, shown in outline. The upper portion 0 
details is of the size of nature, and indicates the numerous irregularly disposed granule 
tions. The lower portion is in part magnified to show the numerous granulations, th b 
tube openings on their top and their radiating tubulation on their sides and in tb e 
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 oth^ 1 ' 
tubulation, the black lines being interspaces between stout, crooked tubes. 
