DESCRIPTION OF PLATE 15. 
Agraulos ceticephalus Barrande. 
1. Two dorsal shields on a fragment of shale from Skrey, Bohemia. U.S. Nat. Mus., Cat. No. 18470. 
1a and 1b. Dorsal and side views of an entire dorsal shield. [After Barrande, Syst. Sil. de Bohéme. 
vol. 1, 1852, plate 10, figs. 14 and 15.] 
1c. Enlargement of two thoracic segments. [After Barrande, idem, fig. 16.] 
Agraulos nitida Walcott (p. 158). 
2. Dorsal and side views of type specimen, showing central parts of cephalon, K 3. U.S. Nat. Mus., 
Cat. No. 58031. 
2a and 2b. Fragments of cranidia, showing variations in outline of glabella and frontal limb, X 3. 
U. S. Nat. Mus., Cat. Nos. 58032 and 58033. 
The three specimens illustrated are from Locality C75, Middle Cambrian, Ki-chou formation, south 
of Wu-t’ai-hién, Shan-si. 
Agraulos abrota Walcott (p. 156). 
3. Dorsal view and side outline of type specimen, showing central parts of cephalon, X 6. From 
Locality C23, Middle Cambrian, Ch’ang-hia formation, east-southeast of Ch’ang-hia, Shan- 
tung. U.S. Nat. Mus., Cat. No. 58034. 
Agraulos obscura Walcott (p. 158). 
4. Dorsal and side views of type specimen, showing central parts of cephalon, X 2.5. From Locality 
C69, Middle Cambrian, Ki-chéu limestone, east of Fang-lan-chén, Shan-si. U.S. Nat. Mus., 
Cat. No. 58035. 
Agraulos dirce Walcott (p. 156). 
5. Dorsal and side views of type specimen, showing central parts of cephalon, X 1.5. From Locality 
C52, Middle Cambrian, Ch’ang-hia formation, northeast of Sin-t’ai-hién, Shan-tung. U.S. 
Nat. Mus., Cat. No. 58036. 
Agraulos dolon Walcott (p. 156). 
6. Dorsal and side views of type specimen, showing central parts of cephalon, X 2. From Locality 
C7, Middle Cambrian, Ch’ang-hia formation, southwest of Yen-chuang, Shan-tung. U.S. 
Nat. Mus., Cat. No. 58037. 
Agraulos uta Walcott (p. 159). 
7. Dorsal and side views of type specimen, showing central parts of cephalon, X 3. From Locality 
C75, Middle Cambrian, Ki-ch6u formation, south of Wu-t’ai-hién, Shan-si. U.S. Nat. Mus., 
Cat. No. 58038. 
Agraulos vicina Walcott (p. 160). 
8. Dorsal and side views of type specimen, showing central parts of cephalon, X 4. From Locality 
C70, Middle Cambrian, Ki-chéu limestone, south-southwest of Tung-yii, Shan-si. U.S. Nat. 
Mus., Cat. No. 58039. 
Agraulos sorge Walcott (p. 159). 
9. Dorsal and side views of type specimen of cranidium, X 4. From Locality 85n, Middle Cambrian, 
Fu-chou series, Liau-tung, Manchuria. U.S. Nat. Mus., Cat. No. 57575. 
Pagodia bia Walcott (p. 161). 
10. Dorsal and side views of type specimen, showing central parts of cephalon, X 3. From Locality 
C56, Upper Cambrian, Ch’au-mi-tién formation, Pagoda Hill, west-southwest of Tsi-nan, 
Shan-tung. U.S. Nat. Mus., Cat. No. 58040. 
10a. Associated pygidium referred to this species. U.S. Nat. Mus., Cat. No. 58041. 
Pagodia dolon Walcott (p. 161). 
11. Dorsal and side views of type specimen, showing central parts of cephalon, X 4. From Locality 
C41, Middle Cambrian, Ch’au-mi-tién formation, southwest of Ch’au-mi-tién, Shan-tung. 
U.S. Nat. Mus., Cat. No. 58042. 
Pagodia lotos Walcott (p. 162). 
12. The type specimen, showing central parts of cephalon, X 2. From Locality C56, Upper Cambrian, 
Ch’au-mi-tién formation, Pagoda Hill, west-southwest of Tsi-nan, Shan-tung. U. S. Nat. 
Mus., Cat. No. 58043. ; , 
12a. Associated pygidium referred to this species, X 4. U.S. Nat. Mus., Cat. No. 58044. 
Pagodia macedo Walcott (p. 163). 
13. Dorsal and side views of type specimen, showing central parts of cephalon, X 2. From Locality 
© 34, Upper Cambrian, Ch’au-mi-tién formation, Ch’au-mi-tién, Shan-tung. U.S. Nat. Mus., 
Cat. No. 58045. 
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