DESCRIPTION OF PLATE II. 
Surface of slab of limestone from Locality C6, Middle Cambrian, thin platy 
limestone in the upper shale member of the Kiu-lung group, 2.5 miles (4 km.) 
southwest of Yen-chuang, Sin-t’ai district, Shan-tung. U.S. Nat. Mus., Cat. 
No. 57943. 
Drepanura premesnili Bergeron [see plate 10, Liostracina krausei Monke [see plate 14, figs. 2, 2a] 
figs. 2, 2a-d] (p. 129). (p. 143). 
1. Pygidia. 
2. Segments of the thorax. BeGraniddin 
3. Cranidium. 
4. Free cheek. Shantungia spinifera Walcott [see plate 14, figs. 6, 
5. Hypostoma. bo eh paxae) 
Agnostus douvilléi Bergeron [see plate 7, figs. 3, Pp. 146) 
a-b, 8, 8a . 100). 43 
: 6. Hehe g. Cranidium. 
7. Cephalon. 10. Free cheeks. 
250 
