162 RESEARCH IN CHINA. 
rounded furrow within the narrow, slightly elevated posterior margin; frontal rim 
rounded, narrow, and separated from the glabella by a strong, rounded, rather deep 
furrow, which becomes more shallow in front of the fixed cheeks. 
Surface marked by numerous, medium-sized puncte, with very fine puncte, 
visible only under a strong lens, between them. 
The largest cephalon of the species has a length of 5.5 mm., with a width at the 
palpebral lobes of 8 mm.; the glabella has a length of 3 mm., with a width of 2.5 mm. 
This species differs from the other species of the genus in its shorter, broader 
glabella, and more convex fixed cheeks. 
Formation and Locality—Upper Cambrian: (C41) Lower part of the Ch’au- 
mi-tién limestone [Blackwelder, 19074, p.36 (part of the first list of fossils)], 2.7 miles 
(4.3 km.) southwest of Ch’au-mi-tién, Shan-tung, China. 
Collected by Eliot Blackwelder. 
Pagodia lotos Walcott. 
Plate 15, Figures 12, 12a. 
Pagodia lotos WALCOTT, 1905, Proc. U. S. Nat. Mus., vol. xxrx, p. 64. (Described and discussed as a 
new species essentially as below.) 
Glabella moderately convex, elongate, with the sides converging very slightly 
toward the broadly rounded front; obscure traces of two pairs of furrows that extend 
a short distance inward and backward occur upon the sides; occipital furrow strong, 
rounded, and arching slightly forward at the center; occipital ring of medium width 
and rounded; dorsal furrow strong but shallow, and merging into the transverse 
furrow in front of the glabella. 
Fixed cheeks about one-half the width of the cephalon opposite the palpebral 
lobes, slightly convex, and sloping gently posteriorly to the furrow within the mar- 
gin, and anteriorly to the transverse furrow within the frontal rim; palpebral lobes 
small, short, not much more than one-fifth the length of the cephalon; a very slight 
trace of a palpebral ridge is shown upon the cast of the interior of the crust, but no 
evidences of it have been seen on the outer surface; frontal rim narrow, rounded so 
as to give it a thickened appearance, with a slightly flattened slope into the furrow 
back of it; it is separated from the glabella and fixed cheeks by a sharp furrow that 
almost cuts back under the front of the glabella. 
The crust is thick; it appears to be smooth on the outer surface over the gla- 
bella and fixed cheeks, with the exception of scattered, shallow puncte. 
The type specimen has a length of 6 mm., with a width at the palpebral lobes 
of 8 mm. 
The associated pygidium is convex, subsemicircular in outline, and strongly 
trilobed, except at the margin. Axial lobe convex, conical, and divided by three 
transverse furrows into three rings and a terminal, rounded, subtriangular portion. 
Pleural lobes nearly flat toward the front near the dorsal furrow, and from there 
curving abruptly downward toward the side and posterior margins; the furrows of 
the axis extend about two-thirds of the distance across the pleural lobes and merge, 
with the flat segments between them, into the margin; the margin slopes up from the 
sharp outer edge with a slight concavity where it merges into the pleural lobes and 
touches the posterior end of the axis. 
This species differs from Pagodia macedo [p. 163] and P. dolon |p. 161] in its 
frontal rim and the slight convergence of the sides of its glabella toward the front. 
It is most nearly related to Pagodia bia |p. 161], with which it is associated. The 
latter species differs from P. lotos in its narrower and proportionately longer gla- 
