5 20 
The Ohio Naturalist. 
[Vol. IX, No. 7, 
Syringothyris sp. A specimen with a short hinge line, as in 
Syringothyris typa, but presenting only the hinge area of the 
pedicel valve and a few of the immediately adjacent parts of the 
radiating plications, was found at Indian Fields, in the thin 
representative of the Bedford-Berea. Syringothyris typa is 
listed by both Newberry and Schuchert from the Bedford shales 
at Bedford, Ohio. 
Ambocoelia norwoodi, sp. nov. (Fig. 2). 
Pedicel valve much less arched than in most specimens referred to 
this genus, although it is not known how much of this may be due to 
flattening. The beak and umbonal parts projects less conspicuously 
beyond the hinge line. The median depression is reduced to a narrow 
groove and widens very little anteriorly. The brachial valve is gently 
convex; the median depression, narrow near the beak, widens consid¬ 
erably anteriorly, though remaining comparatively shallow. Concentric 
lines rather inconspicuous. Length of fairly large specimens, 5 mm.; 
width about the same. 
Rather common in the thin representative of the Bedford- 
Berea at Irvine, Kentucky. Named in honor of Prof. C. J. 
Norwood, State Geologist of Kentucky, who for many years has 
been keenly interested in the correllation of the various Mississ- 
ippian strata of Kentucky. 
Camarotoechia kentuckiensis , sp. nov. (Fig. 14). 
Sinus of the pedicel valve and the elevated fold of the brachial valve 
almost imperceptible in most of the specimens at hand. As a rule, the 
radiating plications occupying these parts of the shell appear slightly 
narrower and closer together than those lateral plications which occur 
within a short distance of the latter. Three plications occur in the 
sinus and four on the fold. The total number of plications is about 16. 
The slender vertical lamellae supporting the teeth extend well into the 
interior of the pedicel valve. The presence of a median septum is dis¬ 
tinctly shown in casts of the brachial valve, but the evidence of an elon¬ 
gate, narrow, median cavity immediately anterior to the beak is met only 
occasionally. The largest specimens found so far have a length of about 
10 mm. Judging from the flattened valves and the little depth of the 
sinus of the pedicel valve in our specimens, this species must originally 
have been one of only moderate convexity. 
Rather common in the thin representative of the Bedford- 
Berea at Indian Fields, Kentucky. Compared with Camar¬ 
otoechia marshallensis , Winched, this species is flatter, and with 
a less elevated fold. The beak of the pedicel valves in normal 
specimens is more elongate. 
Camarotoechia sp. (Fig. 11). 
A single brachial valve, 16 mm. in length, with 6 plications on the 
median fold, only slightly elevated above the lateral plications on either 
side. The number of lateral plications on each side appears to be about 
four or five. Shells of this type usually are referred to Camarotoechia 
sappho, but in our specimen the plications appear flatter and broader, 
especially along the fold. 
Thin representative of the Bedford-Berea at Indian Fields, 
Kentucky. 
