104 RESEARCH IN CHINA. 
In India the type species Redlichia noetlingi [Redlich, 1901, p. 3] occurs near 
the summit of the Cambrian series of formations. In China R. nobilis [p. 105] 
occurs near the base of the Man-t’o formation, not far above the Archean complex. 
Redlichia chinensis is found in the central portions of the Man-t’o formations. 
In my first preliminary paper on the Cambrian faunas of China'I stated that: 
In China R. nobilis occurs near the base of the ManTo formation, not far 
above the Archean complex. R. chinensis is found in the central portions of the 
ManTo formations, and R. finalis occurs nearly 1,000 feet or more higher in the 
section near the top of the Chang Hsia formation. This distribution indicates 
that Redlichia is a Middle Cambrian genus; also that it may be in the upper portion 
of the Lower Cambrian, but with our present information this is somewhat doubtful, 
as the fauna of the ManTo formation is not directly Lower Cambrian. 
Recently Dr. H. Mansuy, a geologist of Indo-China, has discovered some 
entire specimens of Redlichia chinensis near Yunnan-Fu, in Yunnan, associated 
with undescribed trilobites that have a strong Lower Cambrian facies. This dis- 
covery, taken in connection with the occurrence of the brachiopod genus Obolella, 
and a gastropod genus Stenotheca represented by the species rugosa, leads me to 
conclude that the Redlichia chinensis fauna is of late Lower Cambrian age, as given 
in the table showing the association of genera and species in the Man-t’o formation 
[Walcott, 1905), p. 6]. 
It is quite probable, from the character shown by the entire specimens of M. 
Mansuy, that the specimens described as Redlichia finalis Walcott [idem, p. 26] 
may belong to another genus. It differs from the typical forms of the genus R. 
noetlingt and R. chinensis in having a strong nuchal spine, less tapering glabella, 
and broader lobes between the eye and the glabella. 
I wish to call attention to the resemblance between the forms that have been 
referred to Olenellus in Australia? by A. H. Foord and Redlichia. As far as can be 
determined by the illustrations and a study of the specimens of the cephalon 
illustrated by R. Etheridge, Jr.,° there seems to be no escape from the conclusion 
that the Australian form should be referred to the genus Redlichia. 
Redlichia chinensis Walcott. 
Plate 7, Figures 11, 11a—d; Plate 24, Figures 1, 1a. 
Redlichia chinensis WaLcoTT, 1905, Proc. U. S. Nat. Mus., vol. xxx, p. 25. (Discussed as a new 
species essentially as below.) 
This species differs from Redlichia noetlingi Redlich [1901, p. 3], the type of 
the genus from India, in its more conical glabella and smaller anterior lobe of the 
glabella; otherwise the two forms are very much alike, as far as can be determined 
by the present means of comparison. From Redlichia nobilis [p. 105] it differs in 
having a proportionately less cylindrical glabella and much larger anterior fixed 
cheeks. 
The stratigraphic range of the species is from the lower to the central portions 
of the Man-t’o formation. 
Formation and Locality —Lower Cambrian: (C15 and C16) Slaty black lime- 
stone in the lower part of the Man-t’o shale [Blackwelder, 19072, p. 26, third para- 
graph; and fig. 6 (bed 7), p. 25], (C15) at Ch’ang-hia, and (C16) 2 miles (3.2 km.) 

1Proceedings U. S. Nat. Mus., vol. 29, 1905, p. 25. 
2Geological Magazine, London, Decade 3, vol. 7, 1890, p. 99, plate 4, figs. 2, 2a—-b. 
3Transactions Royal Society of South Australia, vol. 29, 1905, p. 247, plate 25, fig. 1. 
