Vol 1. Sun — Cambrian Faunas of North China (iv) 31 



Genus TeiniSTION Monke 

 Teinistion subconica Sun (sp. nov.) 



Plate II, Figa. 4. 



ctr. 1903 Teinistion lansi Monke. Jahrb. Konigl. Preuss. Geol. Landesanstalt und Bergakademie- 



Vol. XXIir, PI. 1, p. 117, pi. 4, figs. 1-17; plate 9, fig. 3. 

 ofr. 1913 Teinistion lansi Monke Walcott, Research in China, Vol. 3, p. 110, pi. 9, fig. 3. 



This species is only represented by a fragmentary cranidium and an associated 

 pygidium. Cranidium moderately convex ; glabella strongly elevated, contracted in the 

 upper part, with the sides curving inward, very broad at the base nearly twice the width 

 of the frontal portion, frontal portion regularly rounded; it is not marked by glabellar 

 furrows, but pustuled by scattered granules; occipital fuirow very shallow slightly 

 impressed. 



Fixed cheeks very broad behind nearly the basal width of the glabella, nearly 

 flat, scarcely rising from the dorsal furrow; palpebral ridge well marked, extending- 

 inward and forward from the palpebral lobe to the front of the glabella. Palpebral lobe 

 not well shown in our specimen ; frontal border narrow, slightly contracting backward in 

 the front of the glabella. Facial suture cutting the anterior border at a point in front of 

 the anterior base of the palpebral lobe, thence forming a signoid curve to the eye lobe ; 

 arching about the palpebral lobe they extend outward and nearly parallel to the posterior 

 margin, then abruptly backward cutting the posterior rim. Dorsal furrows deep and 

 distinct; occipital ring wide separated from the glabella by a very slightly indicated 

 forward-arching occipital furrow ; the center of occipital ring broader than the sides. 



Associated pygidium referred to this species transversely semicircular, marginal 

 border spinose with the anterior pair of spines very strong and long, gently curved 

 backwards. 



This species resembles Teinistion lansi Monke in form, but the subconical gla • 

 bella, the narrow frontal border, the proportionally broader fixed cheeks and the pustu- 

 lose character of the surface serve to distinguish it from Monke's species. 



Measurements: — (Cat, 521) 



Length of cranidium 2.8 mm. 



Length of glabella and occipital ring 2.5 mm. 



Width of the glabella at the base 2,0 mm. 



Horizon and Locality: — Middle Cambrian: from Kushan formation of Lin- 

 cheng, Chihli. Collected by Y. T. Chao and C. C. Tien. 



