NO. 1415. CAMBRIAN FA UNAS OF CHINA— WALCOTT. J:9 



ANOMOCARE BISTON, new species. 



This species is represented by some fragments of the central portion 

 of a head. Ghibella moderately conv^ex, subquadrilateral in outline, 

 narrowing slightly toward the broadly rounded, almost transverse 

 front; surface marked ])y three pairs of slightly impressed short fur- 

 rows; occipital furrow rv)unded, distinctly marked, transverse; occi- 

 pital ring narrow at the sides, In-oadening toward the center to form 

 the base of a moderately strong spine; dorsal furrow narrow, rounded, 

 and distinct. 



Fixed cheeks narrow, scarcely more than a ridge between the dorsal 

 furrow and the palpebral lobe; palpebral lobe about one-third the 

 length of the head, separated from the fixed cheek b}^ a narrow, deep 

 groove; ocular ridge short, distinct, and merging into the rim of the 

 palpebral lobe; postero-lateral limb about as long as the width of the 

 glabella, narrow, and marked ])y a longitudinal groove. In front of 

 the glabella a narrow frontal limb slopes downward to a slightly con- 

 vex, flattened frontal rim about three times as long as the frontal limlj. 



Surface minutely punctate. Length of the largest head, exclusive 

 of the occipital spine, 8 mm. 



This little species appears to be quite distinct from any other form 

 of the genus. Its narrow fixed cheeks, relatively large eye lobe, and 

 flattened frontal rim are the characteristics upon which it is referred 

 to Anomocare. 



Formation and locality. — Middle Cambrian, in the lower half of the 

 Chang Hsia formation, in a compact gra}^ limestone; 2 miles south of 

 Yen Chuang, Hsin Tai, Shangtung, China. 



Collected by Eliot Blackwelder, of the Carnegie Institution of 

 Washington Expedition to China. 



ANOMOCARE (?) BUTES, new species. 



General form of head semicircular, moderately convex. Glabella 

 sub-quadrilateral in outline, narrowing slightly toward the nearly 

 transverse front; marked by three pairs of slightly impressed short 

 furrows and a low, narrow, median ridge; occipital furrow shallow, 

 rounded, and arching very slightl}^ toward the center; occipital ring 

 slightly convex and of moderate width throughout, marked by a 

 minute pointed node at the center; dor.sal furrow rounded, distinct. 



Fixed cheeks less than one-half the width of the glal)ella; they rise 

 with a gentle slope from the dorsal furrow to the furrow Avithin the 

 rim of the palpebral lobe, slope back into the postero-lateral liml), and 

 somewhat abruptly downward in front of the ocular I'idge into the 

 frontal limb; ocular ridge cleai'ly defined and merging into the rim of 

 the palpebral lobe; the latter is a little more than one-third the length 

 of the head; postero-lateral limb nearly as long as the width of the 

 Proc. N. M. vol. xxix— 05 4 



