262 ME. J. W. GEEGORY ON THE 



p. 18, pi. xi. fig. 44), has certain affinities, but the raised triangular or oval zooecia and 

 numerous pores of that species are quite distinctive. H. stipitata, Reuss (No. i, p. 35, 

 pi. V. fig. 19 ; Manzoni, No. 4, p. 19, pi. xi. fig. 45), has also more numerous cancellate 

 pores and a greater thickness of wall. Most of the specimens are less than 2 millim. 

 in diameter and are perfectly spherical; the largest is about 2-5 millim. in diameter, 

 and is somewhat flattened and presents a slight resemblance to some specimens in 

 the Conescliarellina stage of Orhitulipora. 



V. Miscellaneous Records. 



As the Bryozoa are rare in the English Lower Tertiaries, the following records are 

 inserted in the hope that they may lead to search in those horizons. 



DiACHORis INTERMEDIA^ A. W. Waters, A, p. 224 (non Hincks) ; G. R. Vinej a, p. 673, 

 B, p. 160, c, p. 54. 

 Distribution. Middle Eocene, Bournemouth. 



The British Museum contains some specimens of Bryozoa from the same horizon, but they are 

 quite indeterminable. Mr. Waters has also recorded Lepralia, sp., Membranipora, sp., and Flustrae, 

 from the same horizon. 



DiTAXiA VARIABILIS, D^Oi'b., Gr. R. Vine, c, p. 58. 

 The specimen on which this identification was founded is now in the British Museum (B 4589), 

 but it seems to me to be generically indeterminable. It came from the London Clay at Fareham. 



Cribrilina radiata (Moll), A. W. Waters, 1883, in H. M. Klassen, a, p. 244 ; W. Whitaker, 

 B, vol. i. p. 237. 

 Distribution. Woolwich and Reading Beds (Blackheath Beds) j Park Hill, Croydon. 



Fltjstra crassa, Desm.j J. Morris, No. i, p. 37 j T. H. Huxley and R. Etheridge, a, p. 332; 

 W. Whitaker, a, p. 594 ; G. R. Vine, a, p. 673 ; J. L. Lobley, a, p. 96. 

 Distribution. London Clay, Primrose Hill and London District. 



Plustra, sp., W. Whitaker, T. H. Huxley, and R. Etheridge, a, pp. 574, 577, 581 ; T. H. 

 Huxley and E. T. Newton, b, p. 14 ; W. Whitaker, b, vol. i. p. 213. 

 Distribution. Thanet Beds, E. of Faversham. Woolwich and Reading Beds, Dulwich, Sund- 

 ridge. 



PoLYzoA, indet., H. W. Bristow, a, p. 284. 

 Distribution. Bembridge Beds. (This is the only evidence known to me of the occurrence of 

 Bryozoa in the British Upper Oligocene.) 



HoRNERA minuta. Vine, b, p. 166, c, p. 53. Bracklesham Beds. 

 The specimen appears to have been lost. 



HoRNERA ? FLABELLiFORMis, Blainv., Vine, B, p. 166, pi. V. fig. 15, and c, p. 53. 

 The specimen upon which this record is founded is now in the British Museum ; it is partly 

 immersed, with the zooecial orifices downwards, the basal portion alone being visible : it is likely 

 to belong to Idmonea, and to be the same species as that figured by Lonsdale, No. 2, pi. ix. fig. 24, 

 as 1. coronopus, Defr. 



LiCHENOPORA MEDiTERRANEA ?, Blainv., Vine, c, p. 60. 



