PLATK TI. 

 Cambrian Trilobites from North China. Draivings by K. C. Liu {$iitWi) 



Fig. 1. Agnostus cydopygeformis Sun p. 26 



la cephalon x 4 lb cephalon x 4 



Ic ,, X 4 Id ,, X 7 



le pygidinm x 3 If pygidiiim x 5 



Ig ,, X 5 Ih ,, X 5 



Upper Can ilDrian, Kaolishan formation, Kao-Tji-Rhan, Tai-An, Shan- 

 tung ((.'oil. Y. C. Sun. I'otypes, d. S. Ch. Cat. No?. 501, 502, 503, 504, 

 507, 508, 501), 510.). 



F'ig. 2. Agnostus hoi Sun p, 28 



•2a-b eepliala x 8 



■2c-d pygidia x 6, Upper Cambrian, Changshan formation, 

 •len-Chuang, Luan-Hsien, Chihli (Coll. A. W. Grabau, F. F. Mathieu and 

 Y. C. Sun. Cotypes, G. S. Ch. Cat. Nos. 513, 514, 515, 516.). 

 Fig. 3. f)nri/pyge richthofeni Dames *. p. 29 



3a cranidium of granulated surface x 2 



3b cranidium of granulated surface x li 



3c pygidium with very cylindrical axis x 2 



3d pygidium with very cylindrical axis x 3 



Middle Cambrian, Changhia limestone, Cheng-Shan, Chao-Kou- 

 Chuang, Chihli (Coll. K. S. Hsu ^^gg G. S. Ch. Cat. Nos. 517, 5J8, 519, 

 520.). 



Fig. 4. Teinistion subconica 'r^un p, 31 



4 fragmentary cranidium x 7 



Middle Cambrian, Kushan formation, Lin-Cheng, Chihli (Coll. Y. T. 

 Chao & C. C. Tien. Holotype, G. S. Ch. Oat. No. 521.). 



Fig. 5. Stephanocare richthofeni Afonke p 32 



5a cranidium x 3 

 5b associated hypostoma x 5 

 5c small pygidium x 5 



]kliddle Cambrian, Kushan formation, Lin-Cheng, Chihli (Coll. Y. T. 

 Chao & C. 0. Tien, G. S. Ch. Cat. No. 522.). 



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