Br. Feistmantel — Bohemian Coal Fauna ancl Passagc-Bcds. 105 
Cambridge Greensand, is a singulär fact, when we consider that the 
Bulimina and Textularia of this deposit are usually very coarse 
arenaceous examples of tbese genera. The preeeding observations 
leave no doubt however as to the existence of a Foraminifer so 
similar externally to Trochammina irregularis, as to be superficially 
undistinguishable from it, and wbich yet possesses a purely non- 
arenaceous and unmistakably tubulated test ; and thus is added 
another example to the already existing list of species wbich may be 
like one another in all eise, and yet differ in the arenaceous or non- 
arenaceous character of their walls. 
Some day, perhaps, the barrier between the arenaceous and non- 
arenaceous Foraminifera may be broken down as an artificial Separa- 
tion of closely-allied forms, but on this point I may not say moro 
now, lest I should seem to be making premature use of the Information 
about to be published by Mr. Carter, 1 and wbich he has most kindly 
furnished me with beforehand. 
EXPLANATION OF PLATE VI. 
Figs. 1 to 3. Webbina lavis, mihi. 
1. — Outline of a speeimen grown around the coraer of a small angular fragment of 
coprolite. c, the solid angle of the coprolite (x 40). 
2. — Outline of a speeimen consisting of three chambers, which are defined from one 
another by slight constrictions merely (x 40). 
3. — Outline of a speeimen grown over the curved edge of a minute piece of cop- 
rolite (x 40). 
Figs. 4 to 7 and 9. W. tuberculala r mihi. 
4. —Profile outline of a speeimen showing the tubercles, t, and the anterior tubulär 
Prolongation,/), ending in the open mouth, m (x 40). 
5. — Tubercles represented in plan (x 140). 
6. — Tubercles shown in elevation from a lateral view (x 140). 
7. — Seetion across a speeimen adherent to a fragment of coprolite, imbedded in a 
subsequent deposit of coprolite within the cloaca of a Ventriculite ( V . mmn- 
millaris). t and t' , tubercles ; l, thin calcareous lamina, covering over a part 
of the surfaee of adherence, d (x 104). 
8. — Tubulated ivall of the test of Webbina (x 540). 
9. — Single tubereular column of W. tuberculata shown in longitudinal seetion, with 
the adjaeent tubulated walls of the test. c, axial canal with simple outline 
exteriorly and undulating in the inner cone ; e, outer projecting cone ; >, 
inner part of the column ; m, mound produced by accumulation of the sub- 
stance of the test about the projecting cone (x 540). 
IY. — Geological and Historical Notes on the Occürrence of a 
Fauna, Chiefly of Permian Affinities, Associated with a 
Carboniferous Flora in Gas-coal in the Uppermost Portion 
of the Bohemian Coal-stkata . 2 
By Ottokak Feistmantel, M.D., 
Of the Geological Survey of India. 
A S Dr. Anton Fritsch of Prague has brougbt the relics of Permian 
animals (Sauria and Fishes') from the Gas-coal of Nürscban 3 
and from the “ Schwarte,” 4 near Rakonilz, 5 before the Meeting of 
1 Vide Ann. and Mag. Nat. Hist, for March. 
2 For a notice of the Animal-remains from the Gas-coal of Nyiran near Pilsen and 
Kounovü near Rakonitz see Gewl. Mag. 1876, Yol. III. Decade II. pp. 33-34. 
3 In the Pilsen Coal-basin, S.W. Bohemia. 
4 The local name for a kind of Gas-coal. 
5 In the Kladno-Rakonitz Coal-basin, N.W. of Prague, Bohemia. 
