VINE : MICRO-PALEONTOLOGY. 



of the above paper (fig. 15 of plate Craigenglen sp.). Ordinary 

 specimens do not show the pitted surface. 



Localities. — Yoredale : Lowick (surface pitted), Tngoe (surface 

 pitted, and also without), Fourstones (?), Northumberland \ Hurst, 

 Yorkshire. 



4 Bairdia ampla Reuss. 



Jones and Kirkby, Quart. Journ. Geol. Soc, Nov. 1879, pis. xxviii. and xxxii. 

 This species is rare in these Shales, but in comparing the forms 

 with the Scotch examples, I cannot help placing it upon record. 

 Localities. — Yoredale : Fourstones (?), Ingoe, Northumberland. 



5 Bairdia brevis Jones and Kirkby. (Naturalist, p. 99.) 

 This seems to be the most abundant form in the Lowick Shales. 



I am rather doubtful of the specimens from the other Northumbrian 

 localities. 



Localities. — Yoredale : Lowick, Northumberland ; Hurst, York- 

 shire (Redesdale, ante^ p. 99). 



Fam. LEPERDITIAD.^. 

 (vSee Naturalist, aiite^ p. 100.) 

 Genus LEPERDITIA Renault. 



6 Leperditia okeni Munster. 



(For references see Naturalist as above.) i 

 Only one perfect specimen and two or three fragments is all that 

 I have found in the material of these Upper Shales. 



Localities. — Yoredale : Ingoe, Northumberland ; Hurst, York- 

 shire (Redesdale, ante^ p. 100). 



Genus KIRKBY A Jones. 



7 Kirkbya umbonata D'Eichwald. 



Jones and Kirkby, Palseozoic Bivalved Entomos., Ann. Mag. Nat. Hist., 

 March 1885, p. 180. 



In this recent publication of the authors, the whole of the Kirkbycs 

 are described, and the species are illustrated and restricted. 



Localities. — Yoredale : Lowick, Ingoe, Northumberland ; Hurst, 

 Yorkshire. 



Other English localities given by the authors. Garb. Limestone 

 series, Scremerston, Barmoor, Redhouse, Northumberland ; Calees 

 in Cumberland ; Scar Limestone, iVrnside, Westmoreland. 



8 Kirkbya permiana Jones. (See Naturalist, ante., p. 100.) 

 Jones and Kirkby, Ann, Mag. Nat. Hist., March 1885, for synonyms and 



descriptions, pp. 177 and 178. 



Only a fragment — one half of the bivalve — but with the usual 

 and almost unmistakable reticulations. 



Sept. 1885. 



