﻿244 jR. Etheridge, Jun. — Contributions to British Palceontology. 



obtusely rounded and. inconspicuous ; in the uncrushed condition 

 there is probably a more or less blunt diagonal ridge. Ornamen- 

 tation consisting of concentric wi-inkles and finer striae between 

 them ; on the anterior end there are traces of a further transverse 

 wrinkling. 



Ohs. — A. PJiilUpsii was first noticed by Prof. W. C. Williamson, in 

 the second part of his paper " On the Limestones found in the Vicinity 

 of Manchester," as a " Unio of small size." He adds : " The shell 

 varies considerably in size, being sometimes one inch and a half in 

 length, and at others not more than three-fourths of an inch. The 

 depressed and crushed state in which these fossils are found would 

 indicate a shell of a thin and fragile nature." The shell was 

 named Unio FMlUpsii in honour of Dr. C. Phillips of Manchester. 

 In a letter from the late Prof. Phillips quoted by Sir E. I. Murchison 

 in his ''Silurian System," this shell is spoken of as Unio Ungui- 

 formis, and a brief description is given. Mr, E. W. Binney, F.R.S., 

 obtained Anthracomya PkiUipsii in red and greenish mottled clays 

 near the junction of the Coal-measures and New Eed Sandstone 

 in the Valley of the Eiver Medlock, near Manchester. He 

 records it under the name of Modiola sp., to which genus he con- 

 sidered the uncrushed condition to bear the greatest resemblance. 

 I believe the Catalogue of Fossils in the Museum of Practical 

 Geology to have been the first publication in which Unio FhiUipsii 

 was referred to the genus Anthracomya, probably from a deter- 

 mination of the late Mr. J. W. Salter. Similarly, I think the first, 

 and perhaps only figure of this shell, which has hitherto appeared, is 

 that given by my friend Prof. T. Eupert Jones, F.E.S., in his paper 

 " On some Bivalve Entomostraca from the Coal-measures of South 

 Wales." ^ He there shows the general resemblance in outward form 

 borne by some Carboniferous Estherics to species of the genus 

 Anthracomya, and further suggests the possibility of a small shell 

 figured by Mr. Salter as a Modiola,- from the South Wales Coal- 

 measures, being the young of A. FhiUipsii. 



I have been favoured by Prof. W. C. Williamson with the loan of 

 an almost perfect, although cr\ished, example of this species from 

 Ardwick, and another similar specimen from Bradford by Mr. E. W. 

 Binney. The latter is the more transversely-obliquely-elongated of 

 the two. 



Horizon and Loo. — In " black bass " of the Upper Coal-measures, 

 Ardwick, near Manchester, collected by and in the Cabinet of Prof. 

 W. C. Williamson, F.R.S. ; in dark shale of the Coal-measures at 

 Bradford, near Manchester, collected by and in the Cabinet of Mr. 

 E. W. Binney, F.E.S. A. PMllipsii is also found at Longton and 

 Opedale in Stafibrdshire.^ 



Anthracomya Scotica, sp. nov. Plate XII. Fig. 8. 

 (Compare Naiadites i^Autliraco'ptera) lavis, Dawson, Acadian Geology, 2nd ed.> 



1 Geol. Mag. Vol. VIII. PI. IX. Fig. 3. 



2 Iron Ores Great Britain, 1861, pl. 2, f. 3. 



3 lluxley and Etheridge's Cat. Foss. JVIus. Pract. Geology, 1865, p. 16 0. 



