Geological Society of London. 283 



of the Carboniferous-sandstone series are very rich in species. _ The 

 Carboniferous-Limestone series of S.W. Scotland has been highly 

 productive of Ostracoda, particularly the shales of the lower beds ; 36 

 species are commoa or characteristic. The middle or coal-bearing 

 portion has yielded but few, chiefly LeperditiaYoungiana, one Beyrichia, 

 Carbonia fabulina, and C. Rankiniana. The Upper-Limestone group 

 contains many recurrents from below and a few others, including 

 Younyia rectidorsalis (MS.). The Millstone-Grit equivalents have no 

 Ostracoda ; but the overlying Coal-measures are rich in Carbonia, 

 with a few others, such as Cypridina radiata. 



A great variety of genera and species come from beds at or near the 

 base of the Scar Limestone and its equivalents in North Lancashire, 

 Westmoreland, Cumberland, and Northumberland. The Calcareous 

 shales of the Yoredale have several interesting forms, including Phrea- 

 tura concinna (MS.) ; none from the Millstone-Grit. 



The Lower Coal-measures give Beyrichia arcuata and Carbonia, sp. 

 The middle beds have B. arcuata and Carbonia fabulina, common ; 

 rarer, C. Rankiniana, C. secans, C.scalpellus, C. Wardiana (MS.), and 

 JPhilomedes elongata. In the Upper Coal-measures B. subarcuata re- 

 appears ; and in the Spirorbis-limestone Leperditia infiata is the latest 

 Carboniferous Ostracod in England. 



In Northamptonshire the deep Gayton boring (at 730 feet) has given 

 Kirkbya variabilis, K. plicata, Bythocypris sublunata, Macrocypris 

 Jbnesiana, Cytherella extuberata, and C. attenuata, all but one belonging 

 to the Lower-Carboniferous series. In Salop, South Wales, and Somer- 

 set the Carboniferous Limestone has yielded several good species of 

 Leperditia, Kirkbya, Moorea, Bythocypris, Bairdia, etc. Carbonia 

 Agnes and C. Evelince belong to the South- Welsh Coal-measures. 



The distribution of the Carboniferous Ostracoda in Ireland requires 

 further work ; but the Lower-Carboniferous Shales and the Mountain 

 Limestone near Cork and elsewhere are very rich, as are also some 

 parts of the latter in the Isle of Man. 



The Ostracoda of the Permian formation were then treated of in 

 relation to their Carboniferous allies, and the range of the British 

 Carboniferous Ostracods in Europe and North America was noticed in 

 some detail. 



The results of the examination were shown in two extensive tables. 



3. " Note on some Vertebrata of the Red Crag." By R. Lydekker, 

 Esq., F.G.S. 



This communication contained briefly the results of a re-examina- 

 tion of the specimens from the bone-bed of the Red Crag in the British 

 and Ipswich Museums, a series of casts from the latter having been 

 added to the former. The forms noticed were Sycena striata, with 

 which H. antiqua and H arvemensis were considered probably identi- 

 cal ; Mastodon, of which the author thought three species, H. arver- 

 nensis, M. longirostris and M. Borsoni, were represented ; Sus, of which 

 two forms, the larger probably S. erymanthius or S. antiqims, the 

 smaller S. palceochcerus, had been detected ; a Tapir, which was 

 probably Tapirus arvernensis or T. elegans rather than T. priscus ; 

 Hipparion gracile ; a Rhinoceros referable to the hornless R. incisivus 

 rather than to R. Schleiermacheri, though the latter probably also 



