Correspondence — Mr. R. Etheridge, Jim. 335 



According to the label accompanying the shells, they were found in 

 sinking a Government well in the Murray Eiver Flats, on the road 

 from the Burra-Burra Mines to the Great Bend of the Murray Kiver, 

 about half way (thirty miles) between the two points named. For 

 the determination of the Foraminifera I am much indebted to Mr. 

 H. B. Brady, F.E.S., and to Prof. G. S. Brady, for a like examination 

 of the Ostracoda. 



The Foraminifera are — 



Biloculina contraria, D'Orb. 



,, depressa, D'Orb. 



,, eloiigata, D'Orb. 



,, ringens^ Lamk. 

 Cornuspira foliacea, Phil. 



,, involvens, Reuss. 

 Cristellaria rotulata^ Lamk. 

 Glandulina Icevigata, D'Orb. 

 Hauerina compressn, D'Orb. 

 Orbitolites complanatus^ Lamk. 

 Planorbulina reticulata, Czjzck. 



„ Vngeriana, D'Orb. 



The Ostracoda are — 



Bairdia ovata, G. Brady. 

 Macrocypris acuminata^ E,euss. 



Prof. Brady remarks that these appear to be perfectly identical 

 with the Ostracodal fauna now living in the seas of Australia and 

 the Malay Archipelago. A few other Ostracoda were also present, 

 probably new ; but from the paucity of individuals it was scarcely 

 advisable to describe them at present. 



The Murray River Flats consist of a flat scrubby plain extending 

 from the Murray Eiver on the East, between the Great Bend and 

 Lake Victoria, to the South Australian Chain, or Cape Jervis Eange, 

 on the West, and must be composed of strata, geologically speaking, 

 of no great antiquity; in fact, the whole of that portion of the 

 southern coast of Australia bears evident traces of recent upheaval, 

 even in places now going on. E. Etheridge, Jun. 



Edinburgh, May^ 1876. 



Polystomella craticulata, F. & M. 



,, macella, F. & M. 



Pulvinulina elegans, D'Orb. 

 Quinqueloculina agglutinans, D'Orb. 



,, secans, D'Orb. 



,, seminulmn, Linn, (var.) 



,, suh'otunda, Montagu. 



Rotalia Soldanii, D'Orb. 

 Spirolociilina canaliculata, D'Orb. 

 Triloculina oblong a, Montg. 



,, tricarinata, D'Orb. 



Truncatidina lobatula^ W. & J. 



Cythere JSformani, G. Brady. 

 Faracypris decora, G. Brady. 



LLANDOVERY EOCKS IN THE LAKE DISTRICT. 



Sir, — The assertion made by Mr. Aveline in the last Number of 

 the Geol. Mag., that " both the Upper and Lower Llandovery Eocks 

 are absent in the Lake District," is not borne out by the researches 

 of other observers, nor is it in accordance with the published state- 

 ments of such well-known authorities as Prof. Harkness and Dr. 

 Nicholson. The Coniston Limestone is generally acknowledged to 

 be the equivalent of the Bala Limestone, and the succession up to 

 this point is quite clear. Upon this limestone the Graptolitic Mud- 

 stones, according to Mr. Aveline, rest " with a very slight uncon- 

 formity," and he considers the mudstones to be the equivalents of 

 the Tarannon shales of Wales. The Tarannon shales he considers 

 form the base of the Wenlock series, and hence to be higher in the 

 scale than the Upper Llandovery or May Hill sandstones. Now, 

 by a strange coincidence, we find the following statement by Dr. 



