200 RESEARCH IN CHINA. 



Surface minutely punctuate under a strong lens; fine, radiating, irregular, 

 elevated lines cross the frontal limb from the furrow in front of the glabella and the 

 palpebral ridge at the flattened frontal rim, and also from the base of the eye-lobe 

 to the margin of the free cheeks. 



This species varies from the described forms in the broad, relatively short gla- 

 bella and the configuration of the frontal rim and limb. It differs from Anomocare 

 ( = Conocephalites) subquadratum (Dames) [1883, plate i, fig. 9] in having a more con- 

 vex glabella and frontal limb, and the front of the glabella is slightly less transverse. 



Formation and Locality. Middle Cambrian : (C 5) Lower limestone member of 

 the Kiu-lung group [Blackwelder, 19070, pp. 37 and 39 (first list of fossils), and fig. 

 8a (bed 30), p. 29], 3.2 miles (5.1 km.) southwest of Yen-chuang, Sin-t'ai district, 

 Shan-tung; also (C52), in the lower part of the lower limestone member of the 

 Kiu-lung group [idem (second list of fossils), and fig. 7 (bed 22), p. 27], near base of 

 cliffs in mountain 1,000 feet (305 m.) high, 3 miles (4.8 km.) north-northeast of 

 Sin-t'ai-hien, Shan-tung, China. 



Collected by Eliot Blackwelder. 



Anomocarella chinensis Walcott. 

 Plate 20, Figures 3, 3d-e, 4, 40. 



Anomocarella chinensis WALCOTT, 1905, Proc. U. S. Nat. Mus., vol. xxix, p. 57. (Described as a new 



species essentially as below.) 

 Anomocare commune Lorenz, 1906, Zeitschr. deutsch. geol. Gesellsch., vol. LVIII, p. 77, plate 4, figs. 



10, n, 13, 14. (Described as a new species.) 



Cephalon of medium size, moderately convex, and longitudinally irregularly 

 quadrilateral, exclusive of the free cheeks. Glabella moderately convex, rising 

 gently from the dorsal furrow toward the center, so as to give it a slightly ridged 

 appearance. A glabella 5 mm. in width has a length of 7 mm., exclusive of the 

 occipital ring; surface apparently smooth; occipital furrow very slightly defined; 

 occipital ring broad, very slightly convex, with a slight node a little in advance of 

 the center; dorsal furrow shallow, but distinct on the sides and in front of the 

 glabella. 



Fixed cheeks about one-half the width of the glabella, slightly convex; they 

 merge laterally into the furrows outlining the palpebral lobes, and posteriorly slope 

 rapidly to the posterior margin; palpebral ridges low, rounded, and passing outward 

 and merging into the narrow palpebral lobe; they clearly mark the division between 

 the central portion of the fixed cheeks and the rapid slope to the frontal rim ; pal- 

 pebral lobes about one-third the length of the cephalon ; frontal limb narrow in front 

 of the glabella, widening out at the sides and sloping downward with a gentle con- 

 vexity; frontal rim nearly flat, separated from the frontal limb by a shallow furrow 

 that curves slightly backward near the center so as to form an obtuse angle. In 

 some examples there is a slight deepening of the furrow on each side of the incurved 

 portion of the frontal limb ; postero-lateral limbs short, and marked by a rather 

 shallow, broad furrow parallel to their posterior margin. 



Thorax with ten transverse segments. Axial lobe nearly as wide as the pleural 

 lobe exclusive of the falcate terminations of the segments, moderately convex and 

 tapering gradually from the first to the tenth segment. Pleural lobes nearly flat 

 for about one-half their width, and then curved gently downward; pleural furrows 

 broad at the dorsal furrow next to the axial lobe and narrowing gradually along the 

 outer half of their length and terminating in a long point as they curve out on the 

 falcate ends of the pleural lobe of each segment. The ends of the pleurae of each 

 segment curve backward on the line of the doublure as shown in figure 4u. 



