(iv) 84 Pahronlologia Shrifa S^r. B. 



Genotype: Tainnoreiiliahi,^ grabaiti Sun. 



The specimen representing tliis genns was obtained from Kao-Li-Shan of the 

 Tai-An region from which the geneiic name is given. 



Taianocephalus grabaui Sun (gen and sp. nov ) 



Plate V, Fig. 11. 



The generic description is based on tliis species. 



This species is cliaracterized by a large triangular postero-lateral limb, absence of 

 the distinct frontal limb, the elevated palpebral area near the antero-lateral angle, and 

 the truncate -conical glabella marked by a pair of glabellar depressions and the occipital 

 furrow in the form of very broad, shallow pits. 



Thorax and pygidium unknown. 



3Ieasurements : — 



Length of cranidium 12.0 mm. 



Width of cranidium at the palpebral lobe 12.0 ram. 



Length of glabella 9.0 mm. 



Anterior width of glabella 5.2 mm. 



Posterior width of glabella 8.8 mm. 



Width of postero-lateral limb 11.0 nun. 



This species is named in honor of Prof. A. W. Grabau, Chief Palteontologist of 

 the Survey. 



Horizon and Locality: — Upper Cambrian: Kaolishan limestone of Tai-An 

 region (Collected by Y. C, Sun). 



Genus WONGIA Sun (gen. nov.) 



Cranidium subtriangular, exclusive of genal spine; glabella truncato-conical, 

 moderately convex, not marked by glabellar furrows; occipital furrow very shallow and 

 broad slightly arching backward. Occipital ring moderately convex, its transverse dimen- 

 sion about one half the length of the glabella and of about the same width throughout. 



