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walls and almost completely separated by the numerous small mesopores 
and interstitial tissue. 
The lunaria are thick, of slightly greater curvature than the walls of 
the aperture, and forms a semicircle. The attenuated ends of the crescent 
are bluntly rounded. Within the lunarial curve the aperture is narrowed 
sufficiently to accommodate the thickness of the lunarium, but is not dis- 
tinctly constricted as in Coeloclema pierceanum n. sp. 
The zooecial tubes in C. consimile bend outward in a more uniform and 
broader curve from the thecal membrane than in the associated forms. 
Mesopores are more numerous in this species than in C, alternatum of the 
Eden of Cincinnati. 
Occurrence: Pierce limestone, 1 mile southwest of Lascassas, Ruther- 
ford County, Tennessee. 
Holotype: 241-17. Indiana University. 
Genus Anolotichia Ulrich. Genotype: Anolotichia ponderosa Ulrich. 
Anolotichia Ulrich, Geol. Sury., Illinois, 8, 1890, pp. 881, 474; Geol. Minne- 
sota, 3, 1893, p. 326; Zittel’s Textb. Pal. (Engl. ed.), 1896, p. 268. Nickles 
and Bassler, Bull. U. S. Geol. Sury., 173, 1900, p. 24. Brabau and Shimer, 
N. A. Index Fossils, 1, 1907, p. 128. Bassler Bull. U. S. Nat. Mus., 77, 1911, 
p. 91; Zittel-Hastman Textb. Pal., 1915, p. 328. 
Zoarium ramose, digitate, laminate or incrusting ; zooecial tubes are com- 
paratively large, subpolygonal, long and intersected by more or less remote 
diaphragms; lunarium slightly elevated at the surface and traversed in- 
ternally by two to six minute vertical, closely tabulated tubes; mural pores 
present. 
Anolotichia explanata n. sp. Plate III, Figs. 1-4. Zoarium is explanate, 
and lamellose, forming dome-like masses by the superposition of laminar 
expansions which vary from one to three mm. in thickness. The largest 
specimen observed is 70 mm. in diameter and from 10 to 30 mm. in depth. 
The surface is smooth with about 5 inconspicuous maculae of large zoo- 
ecia in one sq. mm. 
The tangential section shows the zooecia to have large, direct, polygonal, 
relatively thin-walled apertures; four to five in 2 mm. Mesopores are few, 
occurring more frequently in the maculae than elsewhere. Lunaria are dis- 
tinct crescents with ends projecting slightly into the zoecial cavity. Three 
to six vertical tubuli traverse internally each lunarium. 
In the longitudinal section the zoecial tubes rise at an acute angle from 
a thin epithelium and bend almost immediately directly towards the sur- 
face. Thin complete diaphragms one to three tube diameters apart cross 
the zoecial tubes. The wall structure as shown in the figure, is character- 
istic of the genus. 
Anolitichia explanata is distinguished from A. ponderosa and A. im- 
polite by the form of the zoarium, and from the expansive species of the 
European types by its more robust growth, greater length of the zoecial 
tubes and more diaphragms. 
Occurrence: Pierce limestone, Murfreesboro, Tennessee. 114 m. N. W. 
