88 
BULLETIN OF THE LABORATORIES 
Plate VIL 
Fig. I. Rhombopora multipora, n. sp; a, type; b, part of the surface, X 14; 
vertical section, X 4.5. 
Fig. 2. Cystodiciya caj-bonaria, Meek; a, frond; b, part of the surface, X 6. 5; 
c, cross-sections showing indented cells and angular interstitial cells, X 6.5. 
F'ig. 3. Rhombopora lepidodendroidea, Meek; a, fragments ; b, part of the 
surface, X18. 
Fig. 4. Pinnatopora {Glattconojne, ante), Whitii, n. sp; a, type; b, cellulifer- 
ous side, X 10 ; c, non-celluliferous side, X ii ; d, section showing internal ar- 
rangement of cells, X II, 
Fig. 5. Rhombopora ? lepidodendroidea. Meek; a, part of the surface, X 8 ; b, 
section ; c, the same, X 3.^. 
Fig. 6. P 7 dstnopora sereata, Meek; a, cast, trichotomously dividing at one 
corner; b, surface; c, cross-sections; d, specimen from Danville, Illinois, dividing 
trichotomously, with cross-section ; e, a side of another specimen. 
Fig. 7, Septopora biserialis, var. g 7 'acilis. Meek; a, non-celluliferous side; b, 
the same, X 4,2 ; c, section showing position of cells and dimorphic pores of the 
celluliferous side, X 8. 
Fig. 8, Chainodictyon Iax 7 t 77 i, n. sp; a, zoarium ; b, non-celluliferous side, 
X 3 ; c, cells, surface view, X 15, and lateral views, X 5, 
F'ig. 9, Polypora fastuosa, De Ko 7 nnck; a, non-celluliferous side; b, the same, 
X4; c, celluliferous side, X3, a part, X8; d, another species, a part, X4, 
Fig. 10, Fenestella limbata, 7 t. sp; a, type; b, celluliferous side, X 11.4; c, 
non-celluliferous side, X 12.3; d, larger form ; e, view of a branch, X 13. 
F'ig. II, Fenestella re 77 iota, 71. sp. ( 7 t. var. a 7 tte); a type; b, cast, X 13, 
Fig. 12. Stenopo 7 'a Ohioe 7 tsis, 7 t. sp; a, part of the surface, X 16 ; tangential 
section, X9,5; the same, X 20; d, vertical section of mature portion showing 
cross-section of annulae with their connecting cell-wall and diaphragms, also a lat- 
eral view of the annulations and three of the vertical thickenings of the cell- wall, 
which in tangential sections appear as darkened spots in the cell walls, X 12, also 
a part enlarged, showing that the walls of contiguous cells are not divided from 
each other, X 18; e, piece of a branch with cross-section showing tendency to- 
wards bilateral structure. 
Fig. 13, Stenopora earbona 7 'ia, Wo 7 ‘then, a, part of the surface, X 12; b, tan. 
gential section with traces of operculate diaphragms, X 12; c, vertical section indicat- 
ing periodical growth, with diaphragms interrupted by operculse, X 12, 
Fig. 14, Phillipsia Shumardi, Herrick; a, entire specimen; b, detached mova- 
ble cheek. 
Fig. 13, Cyathaxo 7 iia prolifera, McChesney; a, lateral view ; b, section passing 
through longer axis of columella; c, view of calyx showing columella, (Plate II, 
Fig, 21, internal cast of calyx,) 
Fig. 16, Septopora biserialis. Swallow; a, part of a zoarium ; b, non-cellulifer_ 
ous side, X 6; celluliferous side, X 7. Specimen found half a mile west of 
Brownsville, 100 feet above the horizon of Flint Ridge specimens. 
