212 O. Feistmantel — A sketch of tie history of the [No. 8, 



Esther ia mangaliensis* Jones. ' 

 1862. Paloeontogr. Society, Monogr. fossil Estheria, p. 76, PI. II, 16-23. 

 Lower Gondwanas : (?) Kamthi group at Mangli, South of Nagpur. 

 This species was also identified by Prof. Geinitz from rhatic beds of 

 the Argentine Republic. 



Besides this larger form, there also occurs another smaller kind, which 

 appears to be identical with a similar form in the Panchet rocks of the 

 Raniganj coalfield, near Assensole. 



Eryonf comp. barrowensis,% McCoy. 

 1877. Feistmantel, Rec. Geol. Survey of India, Vol. X, p. 193, et fig. 8. 

 Upper Gondwanas : Sripermatur group at Vemaveram, South Kistna 

 district. 



Glass MOLLUSC A. § 

 Representatives of this class have hitherto been found in the upper 

 Gondwanas only. 



Order Bbachiopoda. || 

 Many Brachiopoda occur in the Umia group in Kach, in beds inter- 

 calated with the plant beds, while there is a form of a Rhynchonella in the 

 Sripermatur group in the same beds with the plants. 



Order Lamellibbanchiata.^ 



These occur in the Sripermatur group at Ragavapuram (South Goda- 

 vari district), Vemaveram (South Kistna district) and of the Sripermatur 

 area ; most of them are of the same genera (and apparently also of the 

 same species) by which and especially by the common occurrence of the 

 same Ammonites the groups of these three districts may safely be corre- 

 lated, even without reference to the fact that the Floras also are of the 

 same character. 



In the Umia group of Kach there are many Lamellibranchiata 

 (bivalves) of which I shall mention especially two, as they also occur in 

 the Tripetty sandstones on the S. E. Coast (South Godavari), which 

 represent the Umia group. 



* Locality Mangli. 



t Mytholog. name. 



% Locality Barrow. 



§ Mollis (lat.) = soft, tender. 



|| Brachion (gr.) = an arm; pus (gr.) = a foot. 



If Lamella (lat.) branchia (gr.) = gill (having lamellar gills). 



