112 RESEARCH IN CHINA. 
bellar furrows are indicated by slight, short depressions at the sides next to the 
dorsal furrow; back of the posterior pair of depressions a low, rounded ridge extends 
out onto the fixed cheek, forming a low, oval-shaped tubercle or lobe that is appar- 
ently the continuation of the postero-lateral lobe of the glabella; a small pit occurs 
just back of it, from which the occipital furrow starts; the latter is shallow, clearly 
defined, and extends slightly backward and then forward toward the center; occip- 
ital ring of medium width at the sides, broadening out to a somewhat flat, rather 
strong segment at the center; dorsal furrow obscure, and interrupted by the small 
lobe at the postero-lateral angle of the glabella, and by the palpebral ridge at its 
antero-lateral angle. 
Fixed cheeks about two-thirds the width of the central portion of the glabella; 
they rise somewhat rapidly from the dorsal furrow to the palpebral lobe, and slope 
gently back to the posterior furrow and, in front of the palpebral ridge, rather rap- 
idly to the furrow within the frontal rim; palpebral ridges strong and rather promi- 
nent; they originate against the antero-lateral angle of the glabella, extend obliquely 
backward across the fixed cheek, and merge into the rim of the palpebral lobe; 
palpebral lobe elevated above the fixed cheek, prominent, and about one-third of 
the entire length of the cephalon; a shallow groove extends from the thick, strong, 
broad, elevated rim down to the fixed cheek; postero-lateral limb about as long from 
the dorsal furrow to its extremity as the length of the glabella and occipital ring; 
a narrow furrow within the sharp posterior margin gives it an almost concave form; 
frontal border transverse or slightly incurved; it is elevated, rounded, and separated 
from the front of the glabella by a narrow, sharply defined furrow that extends 
outward and slightly forward between the rim and the fixed cheeks; it is nearly 
flat, broad at the center, narrowing toward the facial suture. 
The associated free cheek is subrhomboidal in outline, with a narrow rim that 
is slightly flattened in front, becoming more rounded toward the postero-lateral 
angle, which has a short, sharp, backward-extending spine; the body of the cheek 
is slightly convex, rising broadly from the border to the base of the eye-lobe; the 
posterior border is short, being cut a short distance within the postero-lateral angle 
by the facial suture; the facial sutures, cutting the frontal limb, extend directly back- 
ward, with a slight outward curve, to the eye-lobe, around which they curve; back 
of the eye-lobe the sutures continue with a slight sigmoid flexure outward and back- 
ward, cutting the posterior margin a short distance within the postero-lateral angle. 
The associated pygidium, which is doubtfully referred to this species, is trans- 
versely semicircular, with a short, conical, convex axis; the axis is divided by two 
narrow, shallow, transverse furrows into two anterior segments and a terminal 
segment about as long as the two anterior segments. Pleural lobes depressed, 
nearly flat for a short distance, and then sloping gently down to a narrow, flattened 
margin; they are marked by three shallow furrows, which separate a strong, anterior, 
narrow, elevated rim, two slightly convex segments, and a posterior segment at 
the end of the axis; the furrows and segments stop at the line of the flattened margin, 
with the exception of the anterior elevated rim, which continues across the margin 
and is extended into a strong spine that curves outward and backward; the border 
is narrow, slightly flattened, and transverse, but somewhat incurved posteriorly; 
it has four or more short, broad, backward-extending spines. 
The surface of the central portions of the cephalon is apparently smooth under 
a strong lens, with the exception of a few scattered, depressed tubercles; the free 
cheeks have a few irregular, raised, inosculating lines extending from the base of the 
eye outward toward the rim; the surface of the associated pygidium appears to have 
a very few minute tubercles that can be seen only with the aid of a very strong lens. 
