THE 



GEOLOGICAL MAGAZINE, 



NEW SERIES. DECADE III. VOL. VIII. 



No. II.— FEBRUARY, 1891. 



OI^Z<3-II^^.A.3L .A.I^TIGLES. 



I. — On some more Fossil EsxHERiiE. 

 By Professor T. Rupert Jones, F.R.S., F.G.S., etc. 



(PLATE II.) 



Introduction. 



Estheria membranacea of the Old Red, Orkney. 

 Estheria Andrewsii of the Purbeck, Wilts. 

 Estheria Hindei of the Trias, Pennsylvania. 

 Estheria minuta (Germari ?j of the Trias, Saxony. 



var. Brodieana of the Trias, Cheshire. 



Estheriella. 

 Estheriella cantata ) j; j.i. m • o 



Estheriella nodocostaia \ °* *^^ T"^^' ^^^""""y- 

 Bibliographic history of the Estheriellm. 



IN the September Number of the Geological Magazine, 1890,' 

 I offered some notes on certain Triassic Estherioe of ISorth 

 America and Bavaria, and on an Estheria from the Piirbeck strata 

 of Wiltshire. An interesting example of E. membranacea from the 

 Old Red of Orkney was figured, but not described. We have 

 now the Rev. W. R. Andrews's other Purbeck Estheria, referred to 

 at p. 389, ready for description ; another Triassic Estheria from 

 Pennsylvania ; and some most interesting specimens of the rare 

 Estheiiella, instituted as a subgenus by the late Professor Dr. Ch. 

 Ernst Weiss. 



Seeing the account of Estheria Lewisii in the Geol, Mag., loc. cit., 

 Dr. G. J. Hinde, F.G.S., remembered some specimens he had 

 collected in Pennsylvania, and these I find to be from the same 

 place (Phoenixville) as supplied Mr. C. M. Wheatley with a series 

 for my Monograph in 1862 ; but Dr. Hinde's examples show 

 structure not seen in any of the others. 



Having met with a peculiar structure in some Carboniferous 

 Estherioe from Scotland, which seemed to correspond with the 

 descriptions of that in Estheriella, I asked the late Prof. E. Weiss 

 for information on the subject; and, though confined to bed by 

 illness, he most courteously gave his attention to my request, and 

 not only sent me (in February, 1890) some specimens of the rare 

 fossil, but obtained permission, from the Director of the Geological 

 Institute and Mining Academy at Berlin, for me to have on loan 

 some of the best specimens from the Geological- Survey Museum, to 

 figure and describe. I deeply regret that we have to bring out the 

 1 Decade III. Vol. VII. pp. 385-390, PI. XII. 



DECADE III. — VOL. VIII. NO. II. 4 



