OF DENISON UNIVERSITY. 87 
VIII. From his copious notes on the specimens submitted to him for 
examination, most of the following are extracted. 
Rhombopora multipora^ n. sp, is found at Seville, 111 . 
Glauconome, Goldfuss, is a synonym for Vincularia^ De France^ 
having been originally used to designate Mesozoic species of the lat- 
ter genus ; our species must therefore be referred to Pinnaiapora^ Vine. 
Pinnatopora Whiiii, n. sp, is closely related to P. bellula., Ulrich., 
from Seville, differing in the possession of a double ridged median keel 
on the celluliferous side, and in the absence of distinct granules form- 
ing single rows on the striae of the reverse, 4.3 cells occur in the same 
distance as 3 cells in P. bellula, Ulrich. 
Septopora biserialis, Swallow ; a form resembling the western types 
of this species as figured by Meek, is found at a horizon about 100 
feet above the Flint Ridge layer, near Brownsville. The branches are 
more or less wavy, rounded on the non-poriferous side, the dimorphic 
pores quite numerous, one or two stationed at the junction of the stems 
with the branches, the rest scattered. The dimorphic pores of the 
celluliferous side appear usually between the cells, rather than just 
without the line formed by them, as is more commonly the case in S. 
biserialis, var. gracilis. 
Chaim dicty on laxum, n. sp, is also found at Seville, Illinois. Gen- 
erically, the following cell structure is of importance. Arising near 
the reverse side of the bryozoum the cells are at first somewhat de- 
cumbent, then they enlarge, become compressed laterally, and bend 
towards the celluliferous surface, opening upon the same as elongated 
oval or elliptical cells more or less bounded on each side by single lon- 
gitudinal wavy striae. 
Fenestella limbata, n. sp, is very closely allied to F. mimica, Ul- 
rich, as figured in the forthcoming Illinois report, pi. LII, fig. 7. The 
median keel of the Ohio specimens, however, is more prominent and 
distinct than in that species, but not at all as large as the median keel 
of F. Wortheni, Ulrich, fig. 5, of the same plate. 
Fenestella remota, n. sp. [F. limbata, var. remota, ante), proves on 
further examination to be a well marked species, with four cells to 
each fenestrule, a comparatively broad median keel occupied by a 
closely arranged , series of nodes. The reverse is occupied by distinct 
longitudinal striae. 
