38 HOLLAND AND TIPPER : INDIAN GEOLOGICAL TERMINOLOGY. 



Cuddapah, Kurnool, Tripetty and part of North Arcot to 

 the north frontier of Mysore. (See Cuddapah system.) 

 Cuddapah system. — Name given by W. King (Rec, Geol. Surv., 

 hid., II, 5, 1869 ; Mem., Geol. Surv., hid., VIII, 1, 1872) 

 from one of the districts in the Madras Presidency in which 

 this system of unfossiliferous, ancient strata is largely deve- 

 loped. The system is now included in the Purana group and 

 regarded, like the Gwaliors, Bijawars, etc., as probably pre- 

 Cambrian in age. King sub-divided the s} ? stem as follows : — 



r Srishalarn quartzites. 

 Kistna series, 2,000 feet . •< Kolanrnala slates. 



(. Irlakonda quartzites. 



Nallamalai series, 3,400 feet < _ . , 



(__ Rau-enkonda quartzites. 



Ckeyair series 10,500 feet . I „ . " , .. ' 



J (.Nagan quartzites. 



n i • t trr,A p j f Vempalli slates. 



Papguui series, 4,500 feet. < _. . f ... 



(_ Gulcheru quartzites. 



To the Cuddapahs King relegated such occurrences as the 

 Pakhals and Penganga rocks. 



Cumbum slates. — The upper part of the Nallamallai series in the 

 Cuddapah system. Named by W. King (Mem., Geol. Surv., Ind., 

 VIII, 227, 1872) from the village of Cumbum (15° 34' ; 79° 9') 

 in the Kurnool District. 



Dag beds.— Name used by C. L. Griesbach (Rec., Geol. Surv., Ind., 

 XXV, 106, 1892) for beds exposed near Dag, which were originally 

 supposed by W. Waagen [Salt Range Fossils, Geol. Eesults, Pal. 

 Ind. (IX), Vol. IV, 13] to be Attock slates. Griesbach con- 

 siders them as more probably a flysch facies of the Upper Murree 

 beds. 



Dagshai stage. — A sub-division of the Lower Sub-Himalayan sys- 

 tem, afterwards the Sirmur series (q. v.) distinguished by H. B. 

 Medlicott (Mem., Geol. Surv., Ind., Vol. Ill, pt. 2, 17, 1864) 

 and named from the hill station (30° 53' ; 77° 6') in the Simla 

 district. The rocks are grey or purple sandstone with purple 

 or bright-red clays, without recognisable fossils, and were supposed 

 to afford a conformable passage from the Eocene Subathu to 

 the Lower Miocene Kasauli beds. R. D. Oldham (unpublished 

 note) thinks it possible that the Kasauli and Dagshai beds are 

 local variations of the same stage or series, whilst G. E. Pilgrim 



