Vol. I. 



Sun — Cambrian Faunas of North China 



(iv) 7^ 



Horizon and Locality: This species is associated vfith Pty. chinhsiensis, Pty. 

 walcotti and Eoorthis shakuotunensis etc. in the Shakuotun limestone of Fengtien. 



Measurements : — 



PtYCHASPIS (ANDERSSONIA) TANI Sun (sp. nov.) 



Plate V, Fig. 6. 



This species is represented by one broken portion of the cephalon. 



Glabella moderately convex; divided by two backward arching transverse 

 furrows into one large transverse lobe and two narrow transverse lobes; the combined 

 width of the two narrow transverse lobes being nearly as great as that of the anterior 

 lobe. Occipital furrow distinct. 



J^'ixed cheeks narrow, about one half the width of the glabella at the palpebral 

 lobe; palpebral lobe very large, extending from near the anterior part of the glabella to 

 the occipital furrow, and separated from the fixed cheeks by an infra-curving furrow. 

 Frontal rim elevated and of uniform width, separated from the glabella by a broad 

 concave limb. 



Surface strongly marked by pustules and irregularly curving ridges but not 

 punctate. 



