289 
1851, pp. 154, 278. Pictet, Traite de Pal., 2d ed., 4, 1857, p. 154. Nicholson, 
Pal. Ohio, 2, 1875, p. 214; Pal. Tab. Corals, 1879, p. 292. Zittel, Handb. Pal., 
1, 1880, p. 615; Genus Monticulipora, 1881, p. 97. Ulrich, Jour. Cincinnati 
Soe. Nat. Hist., 5, 1882, p. 156; 6, 1883, p. 265. Roemer, Leth. geog., pt. 1, 
Leth. Pal., 1883, p. 485. James and James, Jour. Cincinnati Soc. Nat. Hist., 
11, 1888, p. 29. Ulrich, Geol. Surv. Illinois, 8, 1890, pp. 374, 425. Rominger, 
Amer. Geol., 6, 1890, p. 113. Ulrich, Geol. Minnesota, 3, 1893, p. 311; Zittel’s 
Textb. Pal. (Enel. ed.), 1896, p. 276. J. F. James, Jour. Cincinnati Soc. Nat. 
Hist., 18, 1896, p. 117. Nickles and Bassler, Bull. U. S. Geol. Surv., 178, 
1900, p. 34. Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 185. Cum- 
ings, 32d Ann. Rept., Dept. Geol. Nat. Res. Indiana, 1908, p. 742. Bassler, 
Bull. U. S. Nat. Mus., 77, 1911, pp. 218, 219; Zittel-Kastman Textb. Pal., 2d 
d., 1918, p. 834. Stellipora Milne-Edwa fds Hist. Nat. des Coral], 3, 1860, 
281 (in part). Dybouski, Du Chaetetiden d. Ostbalt, Silur.-Form., 1877, 
ae ae 
The following definition is from the Zittel-Eastman textbook as given by 
Bassler : 
“Zoaria growing erect (into solid branches) from attached local expan- 
sion. Surface with depressed stellate maculae, the spaces between the rays 
elevated and occupied by two or three short rows or clusters of closely 
approximated zooecial apertures. Mesopores aggregate in the maculae, 
internally with gradually crowding diaphragms.” 
The words in parentheses were added by the author. 
Constellaria lamellosa n. sp. Plate VII, Figs. 3-5. The zoarium consists 
of thin laminar expansions, .6 to 1.5 mm. in thickness. The base is covered 
with a wrinkled epitheca that assumes the general form of the object upon 
which the colony grows. Cylindrical, tubular stems grow upward from the 
expanded portion. 
The maculae are irregular stellate, aggregations of mesopores that are 
raised slightly above the surface; about 9 in 4 sq. mm. The macular rays 
are of variable size and shape and extend between clusters of contiguous 
subangular zooecia. The intermacular zooecia are circular and completely 
separated by mesopores; about 8 in 2 mm. 
Diaphragms in the zooecial tubes are few, more numerous in the peri- 
pheral region than in the earlier portion. The mesopores are crowded with 
diaphragms throughout, about 7 in .5 mm. The mesopores originate in the 
early primitive zone and extend to the surface. 
The internal structure of this species agrees completely with the generic 
description, and for that reason is assigned to Constellaria. The manner of 
growth of the zoarium is quite different from any other described species 
of the genus. 
Occurrence: Pierce limestone. Murfreesboro, Tennessee; 1 mile south- 
west of Lascasses, at Stones River Bridge, Rutherford County, Tennessee. 
Holotype: 53993 U. S. Nat. Mus. 
Paratypes: 241,—10, 24, 25; 245-15. Indiana University. 
Genus Nicholsonella Ulrich. Genotype: Nicholsonella ponderosa Ulrich. 
