loo vine: micro-paleontology of redesdale shales. 



Fam. VII. CYTHERELLID^. 



10 Cytherella sp. (?). 



One of my forms is very much like C. Tatei Jones (Lower Carb. 

 Entomos., Proceedings of the Berwicksh. Nat. Club, Aug. 1884, pi. ii., 

 fig. i), but the others are not sufficiently distinct for the purpose of 

 identification. My specimens, however, are rather rare from this 

 locality. 



Fam. VIII. LEPERDITIMDyE. 

 For details see Ann. Mag. Nat. Hist., May 1865; Monthly Microscopical 

 Journ., Oct. 1870. 



Vine ; Carb. Entomos., North Yorks. (op. cit., p. 234). 



11 Leperditia Okeni Munster. 



Jones and Kirkby : Notes on Palaeozoic Biv. Entomos., Ann. Mag .Nat. Hist., 

 May 1865, and ibid, Jan. 1875. 



Vine: Carb. Entomos., &c. (op. cit., p. 235). 



There is only one specimen in my collection that I can refer to 

 this genus. The species is similar to the Yorkshire form, excepting 

 that it is not quite so plump. 



12 Kirkbya Permiana Jones. 



Prof. King's Perm. Foss., p. 66, tab. xviii ., fig. i,a, b, c, d, as Dithyrocaris ibid. 

 Prof. T. R. Jones, Monthly Micro. Jour., Oct. 1870. 

 Vine : Carb. Entomos., &c. (op. cit., p. 236). 



The specimens, though not abundant in these Northern Carboni- 

 ferous Shales, are very characteristic, and beautifully reticulate. In 

 the Redesdale Shales I have not found more than about four 

 specimens in the coarser debris — in the finer there are many minute 

 fragments of this species. 



13 Kirkbya umbonata D'Eichwald. 

 Beyrichia id. D'Eich. 



See Jones and Kirkby's paper on ' Some Carb. Ostracoda from Russia,' Ann. 

 Mag. Nat. Hist., Jan. 1875. 



Vine : Carb. Entomos., &c. (op. cit., p. 237). 



This form is not so rare as No. 12, and the specimens are very 

 large and bulky : the umbones, too, are much more prominent than in 

 the Scotch specimens from Brockley, where this form is also rather 

 rare, while K. Permiana is rather common. 



14 Kirkbya bipartita Jones and Kirkby. ♦ 



Jones and Kirkby : Trans. Geo. Soc. of Glasgow, 1877. 

 Vine : Carb. Entomos. (op. cit. p. 237). 



I have only one specimen of this species from this locality. It is 

 a rare form in the Scotch shales, and so far as I can judge it may be 

 characterised as very rare here. The Northumberland form is 

 beautifully reticulate, much more distinct than either the Yorkshire 

 or the Scotch specimens in my possession. 



Naturalist, 



