452 J. W . Jackson — Molhisca, Coal-measures, Lancashire. 



the Cahinet of Mr. George Wild, etc. \_2, p. 396], but there appears to 

 be no specimen under that name in the Wild Collection in the 

 Manchester Museum. There is a JYucula, however, in the collection 

 from Carre Heys, Colne (roof of the Bullion Coal), which was figured 

 by AYild as " Niiciila sp." [2, pi. ii, fig. 3]. This specimen is not very 

 well preserved, and is mounted in Canada balsam on a micro-slide, so 

 that its specific characters are difficult to make out. It strongly 

 resembles Nucida gibbosa, Fleming, and in all probability is to be 

 referred to that species. 



" Modiola." — This name was used by Wild [11, p. 184, and 12, 

 p. 462] to denote certain modioliform bivalves occurring in " dark 

 shale over the Low Bottom Bed at Fulledge Colliery, Burnley", and 

 in the " black shale roof over the 5^ inches coal at 636 yards, Bardsley 

 Colliery". Specimens from these and other localities, preserved in 

 the Manchester Museum, and labelled as " Modiola " by Wild, prove 

 to be young forms of Anthracomya. 



" OrtlionotaJ'' — The same remarks apply here as to the above 

 " Modiola". Wild's specimens from the Low Bottom Bed at Fulledge 

 Colliery, Burnley, labelled as " Ortho7iota" , are young forms of 

 Anthracomya ivardi, which species. is already recorded for this horizon 

 by Mr. Bolton [3, p. 597], though omitted from the MoUusca 

 Committee's list. 



TelUnomya robusfa, Bolton [13, p. 5, pi. v, figs. 6-8«]. — After 

 careful and prolonged study of the actual specimens on which this 

 species was founded, as well as others so named in the Manchester 

 Museum and Chadwick Museum, Bolton, I have come to the con- 

 clusion that they are merely interior casts of a species of Carbotiicola. 

 They present no nuculoid characters at all, but, on account of their 

 tumidity, might verj' well be casts of such species as Carbonicola 

 turgida, with which they have been carefully compared. 



The same remark applies to the " TelUnomya, n.sp." of Bolton's later 

 paper [3, p. 589], the specimens being casts of either large forms of 

 Carbonicola turgida, such as those obtained from the " Stubbs Coal", 

 Bardsley, or of C. gibbosa, or even C. robusta. In fact, a specimen in 

 the Chadwick Miiseum, Bolton, from Watergate Colliery, is labelled 

 as " Carbonicola robusta". 



All the specimens I have so far examined of " TelUnomya rohusta " 

 and " TelUnomya, n.sp." show signs of very considerable wear by water 

 action. 



CImnocardiola footii, Baily. — This species was recorded by 

 Dr. Hind [10, p. 475] from the Coal-measures of Burnley, the 

 specimen on which this record was based being in the " Kay- 

 Shuttleworth Collection" (Manchester Museum, L. 2088). The 

 specimen was, until quite recently, stuck down on a cardboard mount, 

 but on detaching it I discovered a label on its underside bearing the 

 legend " Yoredale Shales? Pendle ? " This induced me to carefully 

 examine the matrix, which I found to be a black limestone. I have, 

 therefore, no hesitation in stating that it is not a Coal-measure fossil 

 at all, but is, in a;ll probability, to be referred to the same horizon 

 as the Coelonautilus aff. quadratns mentioned previously, i.e. the 

 Peadleside Series of Black Hall, BoUand. 



