190 RESEARCH IN CHINA. 



Surface smooth under a strong lens. 



The associated pygidium has a strong central axis marked by five or six rings 

 that are very distinct on the broad, planulate margins. 



This species is strongly characterized by its peculiar glabella, with the elongate, 

 narrow lobes near its base; also by the broad, slightly convex frontal rim. 



Formation and Locality. Middle Cambrian: (C19) Uppermost layers of the 

 Ch'ang-hia limestone [Blackwelder, 19070, p. 33 (part of last list of fossils,)], at 

 Ch'ang-hia, and (C26) near the top of the black oolite group in the uppermost 

 layers of the Ch'ang-hia limestone [idem], 2 miles (3.2 km.) north-northeast of 

 Ch'ang-hia, Shan-tung, China. 



The first collected by Li San; the second by Eliot Blackwelder. 



Anomocare ephori Walcott. 



Plate 1 8, Figures 5, $a-b. 



Anomocare ephori WALCOTT, 1911, Smithsonian Misc. Coll., vol. 57, No. 4, p. 90, plate 15, figs. 8-80. 

 (Described and discussed as a new species essentially as below.) 



This species is represented by specimens of the cranidium and associated 

 pygidia that are referred to it. It is closely related to Anomocare flava Walcott 

 [plate 1 8, fig. 8]. It differs in details of frontal limb and border, glabella, and fixed 

 cheeks. It has a less deeply impressed line between the frontal limb and border 

 than that of A. flava. 



Formation and Locality. Middle Cambrian: (35 r) Fu-chou series, limestones 

 near the base of the series just above the white quartzite [see Blackwelder, 19076, 

 p. 92, for general section giving stratigraphic relations], collected in a low bluff on 

 the shore of Tschang-hsing-tau Island, east of Niang-niang-kung, Liau-tung, Man- 

 churia, China. 



Collected by J. P. Iddings and Li San. 



Anomocare flava Walcott. 

 Plate 1 8, Figures 8, Sa-c. 



Anomocare flava WALCOTT, 1906, Proc. U. S. Nat. Mus., vol. xxx, p. 583. (Described as a new species 

 essentially as below.) 



Cephalon, exclusive of the free cheeks, quadrilateral and moderately convex. 

 Glabella slightly convex in front, becoming more convex toward the center, along 

 which there is a very slightly indicated longitudinal ridge. A glabella 6 mm. in 

 length has a width of 5.5 mm. at the base and 4 mm. opposite the anterior edges 

 of the palpebral ridges, where the rounded front begins; the posterior pair of gla- 

 bellar furrows is indicated on one specimen by a slight depression, on another two 

 pairs of furrows are indicated by slight scars about halfway between the center and 

 the sides of the glabella ; occipital furrow shallow, scarcely more than indicating the 

 line of division between the glabella and the occipital ring; the latter rises gently 

 toward the center; dorsal furrow clearly indicated at the junction of the glabella 

 and fixed cheeks, and also in front of the glabella. 



Fixed cheeks about one-third the width of the glabella, nearly flat back of the 

 palpebral ridges, and sloping gently downward to merge into the frontal limb, and 

 backward to the posterior margin of the cephalon ; palpebral ridges low and rather 

 broad; they terminate at the antero-lateral angles of the glabella from whence they 

 extend obliquely backward to merge into the palpebral lobes ; palpebral lobes little 

 more than one-fourth the length of the cephalon, and rather prominent; frontal 

 limb in front of the glabella about the same width as the frontal rim ; it is slightly 

 convex to the base of the rather abrupt posterior margin of the frontal rim. 



