426 F, B. Meek—New species of Fossils 
Again, the surface of its cephalic shield is less strongly granu- 
lated. There are likewise equally well marked differences in 
the pygidium found associated with our species, which shows 
in each lateral lobe thirteen well defined segments, without 
sulcation; while in D. callicephalus these lobes are described 
as having each only nine segments, that are marked with strong 
. furrows. 
Although fully satisfied that the species here described is dis- 
tinct from D. callicephalus, I was in doubt whether or not it 
might be the same form for which Prof. Hall had proposed the 
name Dalmania breviceps (= Dalmanites breviceps),* and conse- 
> cea withdrew the description from a paper on some Ohio 
ossils that I had submitted for publication. I observed some 
important differences in our specimens from the character given 
in the description of D. breviceps ; but fearing that these might 
possibly be due rather to some accidental condition of the 
specimens of that species, I preferred to wait until a figure 
of that form ee : : 
form. The neck segment of our species likewise differs in being 
fully twice as thick as that of D. breviceps, while its palpeom — 
lobes have an entirely differerit form, and its eyes are ecidedly 
more strongly curved and farther removed from the posteno! 
margin of the cheeks, T 
The specific name of this trilobite is given in honor of 5. 4 
Carley, Esq., formerly of Cincinnati, one of the earliest and most 
successful collectors and students of the Cincinnati foss 4 
Locality and position—Three hundred feet above low-water — 
mark, at Cincinnati, Ohio, in the Cincinnati group of the wees 
Silurian. The specimens studied and figured belong we 
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collection of U. P. James, Es 
Proetus Spurzocki M. aes 
General form, exclusive of the spines of the cephalic shield, 
ovate-subelliptic, with moderate convexity. Cephalic shield 
The name Dalmania haying been pre-occupied for a genus of insects, 
Rae te DS retained for these trilobites. I therefore prefer to follow Prof. 
and others in using for the group the name Dalmanites. 
