NO. 1458. 



CAMBRIAN FAUNAS OF CHINA— WALCOTT. 579 



AGRAULOS UTA, new species. 



This species is based upon a sing-le head, preserving the glabella and 

 fixed cheeks, and frontal rim. It is of the same type as Aqranlos (^ 

 capax (p. 580), but differs in having a narrower fixed cheek, less con- 

 vex and swollen frontal limb, and flatter frontal rim. The o-kbella is 

 without traces of furrows, and the occipital ring is separated from it 

 by a very shallow, scarcely noticeable transverse furrow; the frontal 

 limb IS rather broad and slightly swollen in front of the glabella- the 

 general plane of the frontal limb and fixed cheeks is the same from a 

 line drawn through the posterior end of the palpebral lobes. 



Surface slightly roughened by a fine network of narrow, slightly 

 elevated, inosculating lines. The type specimen has a length of 5 5 

 mm. 



formation and /<>m/%. -Middle Cambrian, Ki-chou limestone in 

 brown gray, partly oolitic bed, 10 feet above red shales supposed to 

 correspond to the Man-t'o shales of the Shan-tung sections; 4.5 miles 

 south of Wu-t'ai-hien, Shan-si, China. 



Collected by Eliot Blackwelder. 



AGRAULOS VICINA, new species. 



This species is represented by three specimens of the moderately 

 convex central portions of the head, exclusive of the free cheeks 

 (glabella corneal, convex, and without traces of glabellar furrows- 

 occipital furrow transverse and clearly defined; occipital ring rather 

 strong, transverse, and slightly convex; dorsal furrow rounded of 

 medium width, and clearly defined at the sides and front of the o-kbella 



Fixed cheeks about as wide as the glabella, moderately convex, and 

 sloping forward and slightly downward into the frontal limb; pal- 

 pebral lobes small, situated opposite the central portion of the glabella- 

 ocular ridges narrow, slightly elevated, and extending from the ante- 

 rior end of the palpebral lobe to a point corresponding to the antero- 

 lateral angle of the glabella; postero-lateral limb short, and marked 

 by a shallow furrow within its posterior margin; frontal limb short ' 

 convex in front of the glabella, arching slightly backward on each side 

 to merge into the fixed cheeks; frontal rim broad, slightly convex 

 and separated by a shallow, slightly defined furrow at the angle formed 

 by^the union of the sloping frontal limb with the nearly flat frontal 



Surface roughened as seen by a high magnifying power The 

 largest specimen in the collection has a length of 3 mm 



Ob6^rvatzon.s.~Th[s species is characterized bv its narrow, conical 

 glabella, convex frontal limb that merges into the convexity of the 

 taxed cheeks, and the presence of a distinct frontal rim. In the latter 

 respect it approaches Acjratdos {f) capax (p. 580), and Agraulos uta 



