106 
AUG. F. FOEKSTE 
Trochonema sp., resembling Trochonema beloitense Whitfield in 
having two lateral revolving ridges, and one ridge near the 
upper suture, but entire height of shell only 10 mm., and with 
more acute apical angle. (Plate XV A, fig. 7.) 
Calymene cf. cedarvillensis Foerste 
Illaenus daytonensis Hall and Whitfield. (Plate XV A, fig. 13) 
Lyellia cf. thebesensis Foerste 
Plate XV ^ fig. 8 
Lyellia thebesensis Foerste, Bull. Sci. Lab. Denison Univ., 14, 
1909, p. 95, pi. 4, fig. 69. 
Corallum 70 mm. in width and 45 mm. in height; maximum 
size unknown. Coralhtes averaging 1.5 mm. in diameter, the 
distances between the corallites averaging between 0.4 and 0.5 
mm., two and a half to three corallites occurring in a length of 
5 mm. The corallites are tubular in form and are crossed by 8 
to 13 tabulae in a length of 5 mm. The spaces between the 
corallites are crossed by vesicular tissue, the plates of which 
sometimes are not much closer together than the tabulae within 
the corallites. Wlien the corallum is viewed from above, this 
vesicular tissue frequently has a more or less radiating appear- 
ance. 
Locality and formation.- — In the loose chert, assumed to be 
of Laurel age, on Jeptha Knob, Kentucky. 
Strophonella milleri Sp. nov. 
Plate XIV, fig. 9 
Pedicel valve 17.5 mm. long, 23.5 mm. wide at the hinge-line, 
with the lateral sides converging at an angle of about 36° from 
the postero-lateral angles toward the antero-lateral ones, and 
then rounding anteriorly, with a tendency toward angulation in 
front, somewhat as in Strophonella costulata Hall and Clarke. 
For a distance of 3 to 5 mm. from the. beak the valve is distinctly 
convex, but 8 mm. from the beak the curvature reverses to 
concave and remains so as far as the margin of the valve. There 
is a tendency toward depression also along the median line of 
