24 J. W. Gregory—A new Protaster from Australia. 
to intense lateral pressure. The conscientious and detailed paper by 
Messrs. Marr and Nicholson! on the Stockdale Shales of the Lake 
District, in the November Number of the same publication, has 
brought home to British geologists, in an equally convincing manner, 
the untenability of the views of those few surviving stratigraphists 
who still hesitate to acknowledge the paramount value of the Grap- 
tolites in the elucidation of complicated questions of stratigraphy and 
correlation among the Lower Paleozoic rocks. 
In these two typical papers the zonal and detailed method of 
stratigraphy, as opposed to the regional and generalized method, has 
been consistently followed throughout, and it is to the adoption of 
this method I believe that they owe their reliability and their 
success. ‘This zonal method, which has always been employed by 
myself in my work among the convoluted rocks of the Scottish 
Uplands, has thus quietly entered upon what may be regarded as 
the accepted or orthodox stage. With the new interest springing 
up among British geologists respecting the natural sequence and the 
proper classification of the Lower Paleozoic rocks, it may be 
regarded as certain that the complicated region of the Scottish 
Uplands will now be studied in fuller detail by geologists acquainted 
with the new methods, and that such differences of opinion as still 
exist among geologists respecting these rocks will soon find their 
natural solution and harmony, as in the cases of the Lake District 
and the N.W. Highlands, in a careful and detailed investigation of 
all the actual facts. 
(To be concluded.) 
V.—On a Nuw Species or tou Genus Prorasrer (P. BRISINGOIDES), 
FROM THE Upper SILURIAN OF VicTroria, AUSTRALIA. 
By J. Watter Grecory, F.G.S8., F.ZS., 
of the British Museum (Natural History). 
S° little is as yet known of the Paleozoic Ophiuroidea, that the 
) discovery of some specimens that represent a new species of 
Protaster in the Upper Silurian rocks of Victoria is of interest. 
Some of the specimens were forwarded to Dr. Woodward by Mr. 
Frederick McKnight, of 60, Hawke Street, West, Melbourne, 
Victoria, some time ago, but they were too fragmentary to be 
of much service; several better examples having been received from 
the same source, Dr. Woodward has kindly entrusted them to me for 
description. 
Protaster brisingoides, n.sp. 
Disk obscurely indicated: apparently of medium size and pen- 
tagonal in shape, each face being concave owing to the disk extend- 
ing slightly along the arms. It is seen only in one specimen, and 
in this but faintly. 
The arms are at least twice as long as the diameter of the disk, 
and probably considerably more, the full length not being known. 
The mouth-frames are homologous with the ambulacral ossicles of 
1 Quart. Journ. Geol. Soc. (read May 9), 1888, vol. xliv. 
