Yol. 50.] RH.ETIC AND LIASSIC OSTRACODA OF BRITAIN. 157 



The Garden-Cliff section, near Westbury-on -Severn, 8 miles from 

 Gloucester (' Fossil Insects,' etc., p. 79), has at the top — 



1 [Lias]. Ostrea -bed. 



2 [Rhaetic]. Insect-limestone, with Monotis decussata. 



3. Shale and clay. 



4. " Hard, yellow, and grey limestone, often slaty and sandy, . . . 

 with supposed Cyclas, Plants (Naiades), Cypris, and scales of Fish 

 identical with those at Wainlode." 



5. Shale and clay. 



6. Bone-bed. This series is stated to be " more developed . . . 

 a little further to the north." At p. 80 it is stated that " The 

 Plants (Naiadita lanceolata) and Cypris are here much more 

 abundant, the surface of the slaty portions being covered with 

 remains of the latter Crustacean, which are collected together in 

 masses of some thickness, just as we find them in many freshwater 

 deposits. . . . We have [here] a new and highly interesting feature 

 in the history of this deposit. . . ." 1 



The section at Aust Passage on the Severn, about 30 miles S.W. 

 of Tortworth and 12 miles from Bristol (' Fossil Insects,' etc., 

 p. 82), consists of : — 



1. Bubble ; 6 feet. 2 [Lias]. Oyster-bed, one of five beds of 

 stone ; 4 feet. 3. [Rhaetic]. Landscape-stone ; 5 feet. 4. Clay ; 

 2 inches. 5. "White stone : Cypris- and Plant-bed with Cyclas ? ; 

 6 feet. 6. Clay ; 3 inches. Below this are the Pecten-bed with a 

 clay and the Bone-bed. 



At p. 102, op. cit., the Bev. P. B. Brodie includes in his list of 

 fossils : — 



" Cypris liassica (Brod.), page 80 (Cypris-bed), Wainlode, West- 

 bury, Bickmarsh, Bedminster, 2 Aust." 



1848.— In 1848, H. G. Bronn (' Index Palaeontologicus,' vol. i. 

 p. 389) refers to " Cypris liassica, Brod. foss. ins. 80, 102 (an 

 Cytherince, sp. ?)." 



1851.— In 1854, J. Morris (' Catal. Brit. Foss.' 2nd edit. p. 104) 

 refers Cypris liassica to " Brodie, Foss. Ins., p. 80. Lias. Wain- 

 lode." 



1855. In the Mem. Soc. Geol. France, ser. 2, vol. v. part ii. 

 p. 333, and pi. xxvi. fig. 12, O. Terquem figured and described an 

 Ostracod as Cypris liassica, Brodie. But it does not correspond 

 with any of our Rhaetic forms, and was found in marine beds of the 

 Lias in Luxemburg and the Department of the Moselle. 



1861. — Mr. Charles Moore, after careful study of the Rhaetic 

 formation, noticed the occurrence of '■Cypris' and ' Cypridce' in 

 the White Lias of the Rhaetic formation, 3 and particularly of a 



1 Mr. Brodie adds in a footnote to this passage : — ' I propose to call the 

 Cypris Cypris liassica, as it is the only one of the kind at present known in that 

 formation' [then regarded as Lower Lias, but afterwards (1865) known as 

 Ehsetic], 



2 For C. Moore's notice of the section at Bedminster, near Bristol, see 

 Quart. Journ. Geol. .Soc. vol. xxiii. (1867) pp. 500, 501. 



3 Op. cit. vol. xvii. (1861) p. 496. 



