590 MR. H. BOLTON, F.E.S.E., ON [June, 1904. 



From the roof of tHe Cannel or Two Feet Mine at Dukiii- 

 field. (W. 521, e. coll. Wild, M.M.) 



In the roof of uppermost 6 inches at FuUedge Colliery, 

 Burnley. (George Wild, Trans. Manch., Geol. Soc, 

 Vol. IV., p. 183.) 



As "Unio robustus'^ from 200 yards above the Habergham 

 or assumed Arley Mine at Fulledge. (Binney in *' Excursion 

 to Burnley,'' Trans. Manch. Geol. Soc, Vol. IL, p. 51.) 



As Unio robustus from 47 yards above the Arley Mine at 

 Wigan. (Binney in '' Excursion to Burnley," Trans. 

 Manch. Geol. Soc, Vol. II., p. 51.) 



As Anthracosia robusta in black shale roof over the Five 

 and a half -inch coal at 636 yards. Bardsley Colliery. (George 

 Wild, Trans. Manch. Geol. Soc, Vol. XVIII., p. 462.) 



From 30 yards above the Arley Mine in railway section. 

 Chip Hill, half-a-mile S.E. of Bolton. (Salter, Geol. Surv. 

 Mem. Geology of Country around Bolton-le-Moors, p. 41.) 

 Carhonicola acuta (Sow). 



From roof shales above the New Mine, Bardsley. Five- 

 and-a-half inches above the coal. (W. 528, e. coll. Wild, 

 M.M.) 



Fifteen inches above the coal, some horizon. (W. 533, e. 

 coll. Wild. M.M.). 



Thirty to thirty- six inches above the coal, same horizon. 

 (W. 535, e. coll. Wild, M.M.) 



In Bastard Cannel associated with Ostracods, T^ield Mine, 

 Glodwick, Oldham. (W. 537, e. coll. Wild, M.M.) Curiously 

 elongated valves approaching C. aquilina. 



Roof of the Orrel five-feet mine at Wigan. (L. 3320, 

 M.M.) 



From the Middle Coal Measures of Kersley, horizon not 

 stated. Specimens in the Manchester Museum. 



In Bastard Cannel under the Trencherbone seam at St. 

 George's Pit, Tyldesley, associated with Bhizodopsis sauroides. 



