404 J. W. Jack-son — Palceontological Notes 



of Phillips' species. It is true they are flatter than most examples, 

 but this may be due to pressure. Specimens of 0. nitida from 

 Eccup, near Leeds (shale below third grit), agree with this form 

 exactly. I have been unable to compare them with actual specimens 

 from the North Staffordshire Coal-field, but from the illustrations in 

 Dr. Hind's paper 1 the forms appear to be identical. 



Lingula mytiloides, Sow. Several specimens of a Lingula (now in 

 the Manchester Museum) were collected many years ago by Mr. P. 

 Cairns at Ashton Moss Colliery. These were referred to by Mr. H. 

 Bolton as Lingula sp. in his paper on the " Palaeontology of the 

 Lancashire Coal-measures ". 2 A careful comparison with specimens 

 of L. mytiloides from the Staffordshire Coal-field (over Moss Coal) and 

 other places proves them to be that species. 



Gasteropoda. 



Loxonema acutum, de Kon. (?). In the Grundy Collection, recently 

 acquired by this Museum, is the cast of a univalve, which, in all 

 probability, is referable to this or some other species of Loxonema. 

 It is 8 mm. in length and appears to consist of eight or nine apical 

 whorls. Unfortunately no details can be made out owing to its 

 bad state of preservation. The locality whence the specimen was 

 obtained is the well-known Marine Band exposed on the bank of 

 the River Tame at Dukinfield, its horizon being the same as that 

 of Archceocidaris, etc. 



Lamelijbeanchiata. 



Posidoniella sulcata, Hind. Several specimens in the \Vild 

 Collection from Ashton Moss Colliery are referable to this species, 

 Dr. Hind having kindly confirmed the identification of examples 

 submitted to him. All the specimens are unfortunately very 

 imperfect, but the ornament, consisting of concentric angular ridges, 

 separated by fairly broad, concave sulci, agrees exactly with that of 

 P. sulcata. 



Dr. Hind states in his paper on the " Palaeontology of the Marine 

 Bands in the Coal-measures" (North Staffordshire) 3 that he is of 

 opinion that he saw, several years ago, a specimen of P. sulcata from 

 the Lancashire Coal-measures in the cabinet of the late Mr. Neild, of 

 Oldham, but all attempts to trace the specimen have failed. He 

 further adds, "Mr. H. Bolton 4 quotes Posidonomya lateralis, a synonym 

 of P. hecheri, as occurring in the Lower Coal-measures of Lancashire. 

 Possibly he may have mistaken a specimen of my species for it." 

 The specimen quoted by Mr. Bolton is in the Kay- Shuttle worth 

 Collection in the Manchester Museum, and is labelled as coming from 

 " Coal-measures, Burnley, Lancashire ". I doubt very much that it 

 comes from the Coal-measures at all, as the matrix is more like one 

 of the impure Pendleside Limestones. The species is P. hecheri 

 undoubtedly, and associated with it is an obscure Goniatite. 



1 Q.J.G.S., vol. lxi, pi. xxxv, fig. 3, 1905. 



2 Trans. Manch. Geol. Soc, vol. xxviii, p. 584, 1904. 



3 Q.J.G.S., vol. lxi, p. 535, 1905. 



4 Trans, and Ann. Rep. Manch. Micro. Soc, 1895. 



