FLATF. TV 



Cahil>riau Trilohites j'rom North CJihui. Jh'<tiri)igx hij K. C. Liio (^'l^W.) 

 Fig. 1. Liiidnia^ li^-ii.cliinvlmxnirjcn^i^ Sun p. 54 



la cranidinm x P, lb cranidium x 5 



Middle Cambrian, Changliia limestone, Cheng-Shan, (Jhao-Kou- 

 Chuang, Chihli (Coll. K. S. Hsn. Cotypes G. S. Ch. Cat. Nos. 57:!, 574.). 



Fig. 2. Lisavia rectaii<i\i.larifi' Sun p. 55 



2a cranidium x G 2b cranidium x c, 



Middle Cambrian, Changliia Umestone, Cheng-Sh;ui, Chao-Kuo- 

 Chuang, Chihli (Coll. K. S. Hsu. Cotypes G. S. Ch. Cat. Nos. 575, 576). 



Fig. 3. Solenopleu.ra nodosa Sun p. 56 



3a cranidium x 2 (Holotype) 3b cranidium x 3 (Paratype) 



Aliddle Cambrian, Changhia limestone, Chao-Kou-Cliuang, Luan- 

 Hsien, Chihli (Coll. C. C. Yu ^^^, G. S. Ch. Cat. Nos. 577, 578.). 



Fig. 4. Chiianrjid Jxitiu W'alcott p. 5i~i 



4a cranidium x 2 41) cranidium x :; 4e cranidium x 3 



4d^cranidium x 3 4e hypostoma x 2 



Upper Cambrian, Kaolishan formation, Kao-Li-Shan, Tai-An, 

 Shantung (Coll. V. C. Sun and class 1923 of N. U. P. Cat. Nos. 579, 580, 

 581, 582, 583.). 



Fig. 5. f'haiu/ia rh 'nieiisis Sun p. 60 



5a cranidium, natural size 51) cranidium x 2 5(^ cranidium x 2 

 5d free cheeks, natural size 5e free cheeks, natural size 



5f free cheeks x 2 5g fragmentary pygidium, natural size. 



Upper Cambrian, fronr upper limestone of Chau-JNTi-Tien, Shantung 

 (Coll. Chass 1923 of N. U. P.. Cotypes, G. S. Ch. Cat. Nos. 584, 585, 586, 

 587. 5SS, 589, 590.). 



Fig. 6. (lai(dr(iticei>lialn,>< n'dladti Sun p_ 33 



6a cranidium x -l 6b cranidium x 2 



6c cranidium x 2 6d associated cheek, nalui al si^e. 



Uppermost Cambrian, Kaolishan formation, Kao-Li-Shan, Tai-An, 



Shantung (Coll. Y. C. Sun. Cotypes, G. S. Ch. Cat. Nos. 591, 592, 593, 



504.). 



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