Vol. XXviii.] PALEONTOLOGY OF LANCASHIRE COAL MEASURES. 599 



SeryuliteSy wavy sp. 



From over the Great Mine at Ashton-under-Lyne. (Salter, 



Geol. Surv. Mem., Geology of Country around Oldham, 



p. 63.) 



Turitella sp. 



Marine Band, Dukinfield. (M.M.) 



Cephalopoda. 



Representatives of this division seem entirely absent from 

 the Middle Coal Measures if we except the remarkable 

 '* Marine Band," at Dukinfield and Ash ton Moss Colliery, 

 Audenshaw. A number of specimens mainly, I believe, 

 collected by Mr. E,. Cairns, of Ashton-under-Lyne, are in 

 the Manchester Museum, but cannot be identified ; Salter 

 has described one species of Discites, and indicated the 

 existence of two more. From this horizon also, Mr. J. W. 

 Salter recorded the following : — 



Nautilus precox (Salter). 



Goniatites sp. inc. 



Discites rotifer (Salter). 



Discites sp. 



Discites sp. 



Orthoceras, thin sp. 



All these species are also stated to occur over the Great 

 Mine at Ashton-under-Lyne. (Salter, Geol. Surv. Mem., 

 Geology of Country around Oldham, p. 64.) 



Crustacea and Myriopoda. 



These groups include no less than five genera of con- 

 siderable interest, in addition to Ostracods. One rare form, 

 Limulus trilobitoides, seems to have been wholly lost until 

 re-discovered by Mr. Walter Baldwin, F.G.S., at Sparth 

 Bottoms near llochdale. 



The presence of such crab-like forms as Cyclus, Limulus, 

 and Prestwichia has hardly been suspected in the Middle 



