378 THE CAMBRIAN. [bull. 81. 



formable strata beneath the Middle Cambrian zone in which the Lower 

 Cambrian or Olenellus fauna should be sought for, and there are beds 

 above in which the Upper Cambrian fauna may possibly be discovered. 

 The geologic section is to be compared to that of the Rocky Mountain 

 Province, and the presence of the same peculiar Middle Cambrian 

 fauna, unmarked by the genus Paradoxides, also strengthens the com- 

 parison. 



INDIA. 



In a note on the discovery of trilobites by Dr. H. Warth in the 

 Neobolus beds of the Salt Range, by Mr. Will King, director of the 

 Geological Survey of India, 1 it is stated that the trilobites were dis- 

 covered in the Neobolus beds of the Salt Range. The stratigraphies 

 succession, from the summit downward, beneath the Carboniferous 

 limestone, is as follows : 2 



•W 



Red shaly zone (Salt-pseudomorph zone). 

 Magnesiau sandstone group. <{ 6. Magnesian sandstone. 



Dark shaly zone (Neobolus beds). 



f 4. Upper purple sandstone (purple sandstone). 



■n , -. , j 3. Rock salt and red gypsum group. 



Purple sandstone erroup. < n n 



' 2. Gray gypsum group. 



1. Lower purple sandstone. 



There had been previously discovered in the Neobolus beds by Dr. 

 Warth and Dr. Waagen a number of brachiopods, which were described 

 by Dr. Waagen as follows: Disci nolepi s granulata (p. 750), Schizopholfa 

 rugosa (p. 753), Neobolus warthi (p. 758), N.wynnei (p. 759), David so ntlla 

 linguloides (p. 764), D. squama (p. 766), Lingula hiurensis (p. 768) and L. 

 warthi (p. 769). 3 



It is stated that the trilobites were sent to Dr. Waagen, who identified 

 one of the two determinable species as a Conocephalites, very nearly 

 related to Conocephalites formosus Hartt, from the St. John group, and 

 the other as probably an Olenus. 



The beds in which such forms occur can not be anything but Cambrian, and they 

 must probably be classed as referable to the upper region of the Lower Cambrian.* 



In the table the probable equivalent elsewhere of this formation is 

 the Sinic formation of Richthofen, in China. 5 



AUSTRALIA. 



The Cambrian rocks of Australia appear to be confined to the south- 

 eastern portion of South Australia and the northern portion of Tas- 

 mania. In the " Papers and Proceedings of the Royal Society of 

 Tasmania for 1882,'* Mr. R. Etheridge, jr., described a species of Cono- 

 cephalites which he named Conocephalites f stephensi (p. 153), and the 

 tail of a trilobite which is named Dilceloccphalus tasmanicus (p. 155), 



1 Records of the Geological Survey of India, vol. 22, 1889, pp. 153-157. 



8 Op. cit.,p. 157. 



8 Memoirs of Geol. Surv., India. Palseontologia Indica, ser. xiii, vol. 1, 1887, pp. 750-770. 



4 Records of the Geological Survey of India, vol. 22, 1889, p. 154. 



•Op.cit.p. 157. 



