270 iscellaneous. 
PROCEEDINGS OF LEARNED SOCIETIES. 
GEOLOGICAL SOCIETY. 
June 19, 1895.—Dr. Henry Woodward, F.R.5., 
President, in the Chair. 
The following communication was read :— 
‘On the Occurrence of Radiolaria in Chalk. By W. Hill, Esq., 
F.G.S., and A. J. Jukes-Browne, Esq., B.A., F.G.S. 
The Authors notice the rarity of records of Cretaceous Radiolaria, 
and allude to those which have been made, including those by 
Riist and Sollas. They have recently discovered spherical bodies 
resembling in form and general appearance certain calcified and 
partially destroyed radiolarian tests from some of the Barbadian 
rocks ; microscopic examination of these has proved that many of 
them, at any rate, are Radiolaria. They occur in the nodules of the 
lower beds of the Melbourn Rock at Melbourn, Royston, near 
Hitchin, Leagrave near Luton, Pitstone and Tring, Watlington, 
the Richmond boring, the lower part of the ‘Grit Bed’ at Dover, 
Sutton Waldron and Burcombe (Dorset), and in a nodular chalk which 
may be considered as the equivalent of the Melbourn Rock from 
Bindon Cliffs, near Axmouth, Devon. Similar organisms have recently 
been found in the Chalk Marl of Lincolnshire, Yorkshire, and Norfolk, 
but have not been noticed in any other parts of the Chalk. It is 
suggested that they occurred in many portions of the Chalk-ooze, 
but were usually rapidly and completely dissolved, and contributed 
to that solution of silica which furnished the substance of flint- 
nodules; and the Authors conclude that the preservation of traces 
of the Radiolaria in the nodules of the Melbourn Rock is due to 
some specially favourable conditions. 
A description of the changes undergone by Barbadian Radiolaria 
is given to illustrate the instability of radiolarian tests. Here all 
stages are traceable, from the perfect siliceous test to a structureless 
ball or disc filled with calcareous matter, or a mere patch of clear 
erystalline material. 
A description of forms recognized in the nodules of the Melbourn 
Rock is given. 
MISCELLANEOUS. 
The Name of Galeodes intrepidus. 
By R. I. Pocock. 
On pp. 75 and 76 of the July number of this Magazine I fell into 
the error of thinking that the name intrepidus of Audouin antedated 
that of intrepidus of Dufour. As a matter of fact the latter was 
published in Ann, Gén. Sci, Phys. Bruxelles, iv. p. 370 (1820), and 
the former not until some years later. Consequently C. Koch’s 
name scalaris will stand for the species I termed intrepidus. 
