22 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



C 19. About the same horizon as C 22, C 24, and C 26, same section ; about same 

 horizon as €25, different section. 

 Middle Camhrian : Uppermost layers of the Ch'ang-hia limestone 

 [Blackwelder, 1907, p. 2i2, part of the last list of fossils], at Ch'ang- 

 hia, Shan-tung. 



Dorypyge richthofcni Anomocare daulis 



Damesella brevicaudata Anomocarella tutia 



Lisania belenus Dolichometopus deois 

 Menocephalus abderus 



C 20. About 15 feet above C31, same section; about 35 feet below C 17, differ- 

 ent section. 

 Lower Cambrian : Central part of the Man-t'o shale formation [Black- 

 welder, 1907, p. 26 (last list of fossils) and fig. 6 (bed 14), p. 25], 

 on the west side of an isolated butte i mile (1.6 km.) south of 

 Ch'ang-hia, Shan-tung. 



Billingsella richthofeni Ptychoparia (Emmrichella) 



Ptychoparia aclis mantoensis 



C21. About 100 feet above C 30, different sections; about 100 feet below C 18, 

 same section. 

 Middle Cambrian : Ocher-mottled phase of purple-gray limestone in 

 the middle of the oolitic Ch'ang-hia formation [Blackwelder, 1907, 

 p. 33, second list of fossils], at Ch'ang-hia, Shan-tung. 



Helcionella rugosa orientalis Solenopleura sp. undt. 



Crepicehpalus damia 



C 22. About same horizon as C 19, C 24, and C 26, same section ; above C 18, 

 same section. 

 Middle Cambrian: Ch'ang-hia limestone in upper oolitic portion [Black- 

 welder, 1907. pp. 22 and 2i2i (part of the last list of fossils)], at 

 Ch'ang-hia. Shan-tung. 



Acrotreta lisani Menocephalus acantha 



Hyolithes cybele Menocephalus admeta 



Lisania alala Anomocarella temenus 

 Lisania bura 



C 23. About 180 feet above C 17, same section ; about 25 feet above C 28, 

 different section. 

 Middle Cambrian : Upper part of thin-bedded gray oolitic limestone 

 at the base of the Ch'ang-hia formation [Blackwelder, 1907, p. 32 

 (second list of fossils), and fig. 6 (bed 20), p. 25], 50 feet (15 

 m.) below the base of the cliffs i mile (1.6 km.) east-southeast 

 of Ch'ang-hia, Shan-tung. This horizon is the fourth bed above 

 the black line in the figure on page 25, the one opposite bed " 20." 



Acrothele rara Ptychoparia (Emmrichella) 

 Orthotheca daulis theano 



Ptychoparia {Emmrichella) Agraulos abrota 



eriopia Anomocarella tatian 



