NO. 1415. CAMBRIAN FAUNAS OF CHINA— WALCOTT. 55 



posteriorly slope gently downward to the posterior margin; ocular 

 ridges low, rounded, and merging into the flattened palpebral lobes; 

 in front of the ocular ridges the cheeks are interrupted by an obliquely 

 transverse ridge that extends subparallel to the ocular ridge to the 

 front of the glabella, where it merges into the frontal limb; frontal 

 limb very narrow, sloping rather abruptly downward from the dorsal 

 furrow to a narrow furrow separating it from a broad, slightly down- 

 ward-sloping, nearly flat, frontal rim; postei-o-lateral limb short and 

 marked by a shallow furrow parallel to the posterior margin. 



Surface minutely punctate under a strong lens. The largest head 

 of this species has a length of 18 mm. w^ith a width at the palpebral 

 lobes of 19 mm. 



This large species difl'ers from other forms by the very narrow 

 frontal limb and the flat, downward-sloping frontal rim. 



Formation and locality. — Middle Cambrian, lower central portion 

 of Chang Hsia formation, in thin-bedded limestone interbedded with 

 shale; 2 miles south of Yen Chuang, Hsin Tai, Shangtung, China. 



Collected by Eliot Blackwelder, of the Carnegie Institution of 

 Washington Expedition to China. 



ANOMOCARELLA BAUCIS, new species. 



This species is represented by a single specimen of about one-half of 

 the head, exclusive of the free cheeks. This specimen indicates a 

 moderately convex head, somewhat longitudinall}^ quadrilateral in 

 outline. 



Glabella moderately convex, with the sides converging slightly 

 toward the front; surface apparently free from furrows; occipital 

 furrow broad, shallow, slightly curving forward near the center; 

 occipital ring low, strong, and slightly convex; dorsal furrow shallow, 

 not clearly defined. 



Fixed cheeks a little more than one-half the width of the glabella, 

 nearly flat out to the elevated palpebral lobe and sloping with mod- 

 erate rapidity to the posterior margin. Ocular ridge low, narrow, 

 and merging into the strong palpebral lobe, which is about one-third 

 the length of the head; frontal limb narrow in front of the glabella, 

 widening at the sides in front of the ocular ridges; it slopes gently 

 down to a rounded shallow furrow that separates it from a slightly 

 convex frontal rim, that is broader than the frontal limb in front of 

 the glabella; postero-lateral limb narrow, about as long as the width 

 of the fixed cheek, and marked by a rather strong border and shallow 

 furrow parallel to the border. 



Surface marked by scattered punct^e and very fine puncta3 visible 

 only with the aid of a strong lens. 



This species is characterized by the shallow, rounded dorsal furrow, 

 elevated palpebral lobe, and the smooth, slightly convex frontal rim. 



