(iv) 52 Palse.ontologia Sinica Ser. B. 



Width of frontal rim 1.8 mm. 1.3 mm. 1.0 mm. 1.0 mm. 1.5 mm. 



Width of occipital ring 2.0 mm. 1.7 mm. 1.4 mm. 1.5 mm. 2.0 mm. 



Pygidium 7 f 7 g 7 h 7 i 7 j 



Length 9.0 mm. 9.0 mm. 10.5 mm. 10.0 mm. 8.5 mm. 



Width 14.5 mm. 14.2 mm. 15.5 mm. 12.5 mm. 13.0 mm. 



Length of axial lobe 8.5 mm. S./I mm. 10.0 mm. 9.0 mm. 8.0 mm. 



Average width of the 



transverse rings 1.1mm. 1.1 mm. 1.2 mm. — — 



Length of side spines (mea- 

 sured on curvature ) IG.O mm. 12.0 mm. 7.5 mm. 8.0 mm. 5.0 mm. 



Genus Kaolishania Sun (gen. nov.) 



General form suhquadrangular, moderately convex ; axial and pleural lobes 

 strongly defined. 



Cephalon wider than long, subsemicircular in outline ; glabella truncato-conical, 

 moderately convex and marked by three pairs of the lateral furrows, the posterior pair 

 deep and broad, obliquely extending backward, the second pair deep and short, and slight- 

 ly extending obliquely backward, and the anterior pair marked by a very slight trace ; 

 occipital furrows strong and distinct, occipital ring broad in the center, becoming narrow 

 toward each side. A median longitudinal ridge extends from the front border of the gla- 

 bella to the occipital furrow. The straight frontal part of the glabella and the fixed 

 cheeks are separated from the frontal border by a strong and deep groove ; frontal border 

 narrow, slightly rounded in the front and turning up from the deep strong frontal groove 

 to the frontal margin. 



Fixed cheeks slightly convex and rising from the dorsal furrow, about one half 

 the width of the glabella; palpebral ridge extending backward and outward from the 

 dorsal furrow to the anterior part of the palpebral lobe ; palpebral lobe of medium size. 



Free cheeks moderately convex, elongate, broad at the anterior end where they 

 join the fixed cheeks and the frontal border^ and narrow at the posterior, ending in a 

 slender rounded lateral spine; the cheek-body broad and moderately convex, separa- 

 ted from the slightly elevated narrow border by a distinct curving furrow. 



The facial suture cuts the outer postero-lateral side of the genal angle, and 

 passes almost directly inward to the base of the eye lobe, arching around the latter, it 

 passes with a slight convex curve directly forward to the front margin. 



