DESCRIPTION OF GENERA AND SPECIES. 203 
Fixed cheeks narrow, almost lost in the palpebral lobes; in front of the latter 
they extend forward and downward, as narrow, convex ridges, merging into the 
frontal limb; palpebral lobes strong, about one-third the length of the cephalon; 
palpebral ridge merged into the fixed cheek on the back side and defined by a short, 
steep slope on the front side; frontal limb of medium width, sloping with very little 
convexity to the narrow furrow separating the frontal limb from the relatively broad, 
flattened frontal rim; the length of the latter in front of the glabella is a little more 
than that of the frontal limb. 
Surface slightly roughened by elevated, irregular, more or less inosculating 
lines upon which numerous, minute nodes occur. ‘The result is that on some por- 
tions the surface appears to be finely granulose, and on others finely punctate, the 
interspaces between the inosculating lines giving the punctate appearance and the 
nodes on the lines the granulose appearance. A cephalon 4.5 mm. in length has the 
same width at the palpebral lobes, exclusive of the free cheeks. 
The nearest related species is Lisanza bura [plate 15, fig.15]. It differs from the 
latter in having a short frontal limb between the glabella and frontal rim, relatively 
larger palpebral lobes, and a stronger dorsal furrow about the glabella. 
Formation and Locality—Middle Cambrian: (C77) Limestone interbedded in 
green shales not more than 300 feet (90 m.) above the Man-t’o shales [Willis and 
Blackwelder, 1907, p. 144 (first list of fossils)], 4 miles (6.4 km.) southeast of Yau-t’o, 
near Wu-t’ai-hién, Shan-si, China. 
Collected by Eliot Blackwelder. 
Anomocarella macar Walcott. 
Plate 20, Figures 6, 6a—d. 
Anomocarella macar WALcort, 1911, Smithsonian Misc. Coll., vol. 57, No. 4, p. 92, plate 15, figs. 11, 
11a—b. (Described and discussed as a new species essentially as below.) 
Of the Chinese species of Anomocarella, the cranidium of this species may be 
compared with that of A. tatian |piate 21, fig. 1] in that the frontal limb curves 
more abruptly down toward the frontal margin than in most species of the genus, 
and the frontal margin also bends downward to a greater degree. The outline of 
the glabella and fixed cheeks is almost similar in the two species. The associated 
pygidia are more elongate than those referred to A. tatian and have a greater num- 
ber of segments in the axial and pleural lobes. 
Formation and Locality Middle Cambrian: (85n) Fu-chéu series, limestones 
near the base of the series just above the white quartzite [see Blackwelder, 1907), p. 
92, for general section showing stratigraphic relations], collected in a low bluff on the 
shore of Tschang-hsing-tau Island, east of Niang-niang-kung, Liau-tung, Manchuria, 
China. 
Collected by J. P. Iddings and Li San. 
Anomocarella smithi Walcott. 
Plate 19, Figures 16, 164-0. 
Anomocarella smitht WaLcoTT, 1911, Smithsonian Misc. Coll., vol. 57, No. 4, pp. 92-94, plate 17, 
figs. 3 and 3a. (Described and discussed as a new species essentially as below.) 
Dorsal shield of medium size, elongate-elliptical in outline, convex, with the 
axial lobe strongly defined and convex. Cephalon semicircular in outline with the 
genal angles extended into short, sharp spines; a narrow, flattened border extends 
across the front of the cranidium and continues along the free cheeks until it passes 
into the genal spines; the posterior margin is narrow and distinctly defined by a 
