88 
AUG. F. FOERSTE 
Locality and Formation. Quarry half a mile northeast of 
Centerville, Ohio; in argillaceous strata immediately beneath 
the Brassfield limestone. 
Dalmanites sp. 
Plate XIV ^ jig. 10 
Fragment of the right side of a pygidium, with 9 pleural ribs, 
each traversed lengthwise by a median groove. For a width of 
about 1.5 mm. the margin of the pygidium is smooth, and un- 
marked by pleural ribs. The pygidium probably was 20 mm. in 
length, exclusive of any posterior spine, if a spine was present. 
Locality and formation.' — Quarry f mile northeast of Center- 
ville, Ohio; in argillaceous strata immediately beneath the Brass- 
field limestone. 
Remarks. — This Centerville fragment differs from Dalmanites 
danai in having the anterior part of the pleural lobes of the py- 
gidium more directly transverse, and the pleural ribs less strongly 
curved backward at mid-length of the pygidium. Moreover, the 
marginal part is relatively broad, flat, and free from markings 
by the terminations of the pleural ribs. 
E. THE BRACHIOPODA OF THE BRASSFIELD LIMESTONE OF OHIO 
The following is a revision of the list of brachiopoda found in 
the Brassfield limestone published in 1893.^^ 
Crania diibia Foerste 
Crania clintonensis (Foerste) 
Fleet ambonites transversalis (Wahlenberg) 
Plectambonites prolongatus (Foerste) 
Leptaena rliomboidalis Wilckens 
Leptaena centervillensis Foerste. Sp. nov. 
Strophonella hanoverensis (Foerste) 
Strophonella daytonensis Foerste 
Schuchertella daytonensis Foerste Sp. nov. 
Orthis euorthis Foerste ( = militaris Foerste) 
25 Foerste, A. F., Fossils of the Clinton group in Ohio and Indiana: Ohio Geol. 
Surv., vol. 7, 1893, p. 597. 
