62 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



trilobites allied to Agraulos named Palcuolenus by Mansuy.^ The 

 fauna includes: 



Annelids : Trilobites : 



Planolites ? Redlichia chinensis Walcott 



^ Redlichia nobilis Walcott 



BrACHIOPODS: d j;- i • 7 ^x- A/r 



Redlichia walcotti Mansuy 

 Obolus ? detritus Mansuy Redlichia carinata Mansuy 



Obolus damesi Walcott Redlichia sp. 



Obolus cf. chinensis Walcott Palceolenus douvillei Mansuy 



Lmgula yunnanensis Mansuy PalcBolenus lantenoisi Mansuy 



Acrothele matthewi eryx Walcott Palcuolenus deprati Mansuy 



Ptychoparia yunnanensis Mansuy 



Acrothele orbicularis Mansuy 



OSTRACODS; 



Bradoria douvillei Mansuy 



Aluta sp. ? 



Nothozoe ? , 



An interval of about 1,700 miles (2,700 km.) occurs between the 

 Yun-nan locality of Redlichia and its occurrence in northern India 

 in Spiti as the closely allied species R. noetlingi.' 



In western Australia Redlichia occurs in the Kimberley district. 

 It was published as Olenelliis ? forresti [Etheridge, Jr., MSS.] by 

 Arthur H. Foord.' 



In South Australia a very good specimen of the central portions 

 of the cephalon is mentioned as Olenellus sp., by R. Etheridge, Jr.^ 



The distribution of Redlichia, of the R. noetlingi form, serves to 

 demonstrate that the transgressing Lower Cambrian sea that con- 

 tained the Redlichia fauna was confined to eastern and southeastern 

 China and northern India. The presence of Redlichia-like trilobites 

 in southern and western Australia indicates that there was direct 

 connection between the Punjab Lower Cambrian sea of India and 

 the shallow seas about the Australian area. There is no record 

 pointing to a connection between the Punjab-Man-t'o sea and the 

 Lower Cambrian seas of northern Siberia, or western North America. 



Middle Cambrian fauna. — The lower portion of the Middle Cam- 

 brian section and its contained fauna show that a marked change 



^ Mem. service geol. I'lndo-Chine, Vol. i, 1912 (received ]\Iay 8, 1913), fasc. 

 2, fitude geologique Paleontologie, pp. 27-30. 



^Mem. Geol. Surv. India, n. ser., Vol. i, 1901, p. 2; also Idem, series 15, 

 Vol. 7, No. I, 1910, p. 7. 



^ Geol. Mag., London, Dec. Ill, Vol. 7, 1890, p. 199, plate 4, figs. 2, 2a-b. 



* Trans. Roy. Soc. South Australia, Vol. 29, 1905, plate 25, fig. i. (See 

 Tate, idem. Vol. 15, 1892, Cambrian fossils of South Australia, pi. 2, p. 183.) 



