76 HOLLAND AND TIPPER : INDIAN GEOLOGICAL TERMINOLOGY. 



equivalence with the Siwaliks. Divided by H. B. Medlicott 

 {Mem. Geol. Surv. Ind., X, 150 — 158, 1873) into three stages : — 



3. Bagra. 

 2. Denwa. 

 1. Pachrnarhi. 



The vertebrate remains afterwards found in the Denwa stage 

 show an imperfect correspondence with the Kota-Maleri stage. 



Ma=i formation.— Name used by W. Theobald (Mem. Geol. Surv. 

 Ind., X, 311, 1873) for rocks in the district of Sandoway, Arakan, 

 which were not mapped or worked out in detail, but yielded a 

 single Cretaceous fossil Ammonites (ScMceribachia) inflatus Sow. 

 near the village of Ma-i (19° 20' ; 94° 13'). 



Makran (Mekrail) group.— So called by W. T. Blanford (Rec. Geol. 

 Surv. Ind., V, 43, 1872) from the name of the littoral tracts 

 of Baluchistan. The formation consists essentially of ' thick 

 beds of pale-grey clay, more or less indurated, with occasional 

 bands of shelly limestone, calcareous grit and sandstones. From 

 the fossils it was considered to be of marine origin and to be newer 

 than the Nummulitics. It was thought that they might repre- 

 sent the " miliolites " of Kathiawar and south-east Arabia. 

 The only fossils examined in detail were the echinoids. From 

 these P. M. Duncan and W. P. Sladen (Pal. Ind., XIV, 1, part 3, fasc. 

 V, 1 880) thought the strata were of Pliocene age. E. Vredenburg 

 (Rec. Geol. Surv. Ind., XXXIV, 89, 175, 1906) discusses the extent 

 of this group and points out its comprehensive character includ- 

 ing beds equivalent to the Nari and Gaj and even newer. He 

 also suggests its equivalence with the Pegu group of Burma. He 

 separates off the newer beds under the name of the Hinglaj stage 

 (q. v.). G. E. Pilgrim (Mem. Geol. Surv. Ind., XXXIV, 3, 26, 34, 

 1908) discusses its extension in Persia. 



Malatli beds. — Name given by W. T. Blanford (Rec. Geol. Surv. Ind., 

 X, 17, 1877) for a volcauic series of rocks in the Western Raj- 

 putana desert, specially well developed in the Malani district of 

 Marwar (Jodhpur) State. The rocks are mainly rhyolitic lavas 

 and tuffs, which rest with marked unconformity on the Aia- 

 valli schists and were subjected to considerable weathering be- 

 fore the deposition of the Jodhpur (Vindhyan) sandstone (see 

 T. H. D. La Touche, Mem. Geol. Surv. Ind., XXXV, 19, 26, 

 1902). Exposures of the Malani rocks are found at intervals for 



