PLATE XI. 
Lioclema asperum Hall. (Pago 32.) 
[See also PI. XXIV, figs. 14-16.] 
Fig. 1. A vortical section, X 20, passing through an immature and portions of two 
mature regions. 
2. Tangential section, X 20, illustrating the general features of the mature region. 
3. A portion of a tangential section, X 35, showing the structure of the walls and of 
the numerous large acanthopores. 
Rochester shale, Lockport . X. Y. 
Lioclema multiporum n. sp. (Pago 34.) 
[See also PI. XXIII, fig. is; PL XXVII, fig.- 20.] 
4. A small portion of a tangential section, x 20, passing through the mature region 
5. A vertical section, X 20, showing the characters of both immature and mature 
regions. 
6. A portion of the tangential section figured in 1, X 35, introduced for comparison 
with the corresponding figure of /.. aspentm. 
Rochester shale, Lockport, N. Y. 
Li&clemella rnaccomiri n. sp. (Pago 36.) 
[See also PI. x\Y, figs.. r )-7.] 
7. Vertical section, x 20, with the usual tabulal ion of zocecia and mesopores. 
S, '.). Tangential section, x 20, and a portion of same. X 30, illustrating the shape of the 
zocecia and structure of the walls. 
10. Surface of one of the figured types, X 8. 
Rochester shale, Lockport, N. Y. 
Lioclema ramulosum n. sp. (Pago 35.) 
[See also PI. XXV, figs. 9, 10.] 
11. Vertical section, X 20, illustrating the apparent absence of diaphragms. 
12, 13. Tangential section, X 20, and a portion of same, X 30, showing the general 
arrangement and structure of the zocecia and mesopores and of the few hut 
large acanthopores. 
Rochester shale, Lockport, N. Y. 
Eridotrypa nodulom n. sp. (Pago 30.) 
[See also PI. XXV, figs. I 3.] 
14, 15. Tangential and vortical sections, respectively, X 20, illustrating the internal char- 
act ers of a mat ure example. 
Rochester shale, Lockport, N. Y. 
86 
