OF DENISON UNIVERSITY. 
49 
Moot’s run, and near Loudonville, 6o to 8o feet below conglom- 
erate I, also at Alexandria, O. 
CONULARIA MICRON EM A, Meek. var. n. 
(Plate VIII, Fig. 4.) 
Shell square-pyramidal, moderately acute, uninclined, with the 
sides nearly equal, nearly plane or gently convex, inclined to each 
other at an angle of about fifteen to eighteen degrees. The angles are 
marked by the usual groove into .which the striae pass by a very sud- 
den flexture, while the middle of the lateral faces bears a definite 
though narrow groove, across which the striae do not pass. The sur- 
face is marked by very numerous, closely crowded, thread-like, gently 
curved striae of which there are 60 to the centimeter or about 150 to 
the inch ; these striae are ornamented by pyramidal prominences which 
are separated by a distance less than the interval between consecutive 
striae. 
CRUSTACEA. 
Considerable attention has of late been paid to the trilobites of 
the Carboniferous and immediately preceeding formations. 
Beginning with a brief synopsis by the writer in May, 1887,* and 
a description of a perfect specimen of Fhtllipsia auriculata^ there fol- 
lowed in the same year Lieut. Vogdes’ ‘‘Genera and species of N. A. 
Carboniferous Trilobites,” and in the next year, in April, a descrip- 
tion of Phillipsia [Froetus) Frcecursorm Bui. Den. Univ. vol. iii, and 
a little later the last volume of the Palaeontology of New York in 
Miich are discussed a large number of Devonian and Carboniferous 
species. • 
One or two points in Mr. Vogdes’ valuable paper should be noted. 
For example, on page 81, in quoting FhilHpsia trinucleata^ Herrick, 
he refers to it as from the Waverly instead of a well-authenticated 
coal-measure horizon. Influenced apparently by this impression the 
■'•'■“Synopsis of Carboniferous Trilobites” forming appendix I to the first in- 
stallment of the present article entitled “Carboniferous Fossils, from Flint Ridge, 
Ohio.” This paper has been quoted by continental reviewers as by Mr. Flint 
Ridge, Esq., illustrating at once the illusory character of fame and the care be- 
stowed by trans-atlantic authors in dealing with American papers. 
