538 J. E. Marr — The Wenlock and Ludlow strata — 



■ Protaster s-p Casterton Fell. 



fCeratiocaru Murchisoni, Agaz Casterton Fell; Helm Knot; Trout- 

 beck ; South of Coldwell. 



+ robusta, Salt Casterton Fell; High Hollins; Helm 



+ ti/rannus, Salt Troutbeck. [Knot. 



§£ncrinurus punctatics, Briinn Middleton Fell. 



\ Momalonotus Knightii, Komg Middleton Fell. 



*Acidaspis Htighesii, ^a\.t.,'^]..Q Casterton Low Fell; Helm Knot; 



Galegarth ; Ravenstonedale. 



^Phacops Stokesii,TA.'E.&w Troutbeck; Outrake, Ulverston. 



torvus, Wyatt-Edgell, M.S. ... Troutbeck. 



ca/idatus, Brongn. var Troutbeck. 



Orthis Zcwisii,'Da.Y.,\a,T.I£iiffhesii,'Da\. Helm Kuot. 



XBaijia navicula, Sow Middleton Fell. 



\Rhynchonella nuciila, Sow Middleton Fell. 



Orthis parva, var. avellana Horton. 



fBiscina Forbesii, Dav Middleton Fell. 



fCardiola interrupta, Brod Windermere ; Sedbergh ; and Settle 



XPterinea suhfalcata, Conr Howgill Fells. [districts. 



t temiiitrita, M'Coy Casterton and Middleton Fells; High 



Hollins ; Helm Kuot. 



, t Sowerbgi, M-'Coj Helm Knot. 



Ctenodonta sp Helm Knot. 



XTentaaulites tenuis, Sow Cautley. 



fOrtkoceras primaevum, Forhes Horton; Helm Knot ; Troutbeck. 



dimidiatum, Sow Helm Knot. 



t subiD/di/hUiim, Fortl Horton; Howgill Fells ; Hawkshead. 



t liidt'/i^e, Sow Helm Knot. 



tracheale, Sow Howgill Fells. 



\Troclioceras giganteum, Sow Horton. 



* Not recorded outside the district, 

 t Recorded elsewhere from Ludlow and Wenlock Beds. 

 J Recorded elsewhere from Ludlow only. 

 § Recorded elsewhere from Wenlock only. 

 Note. — No account is taken of occurrences in the Denbighshire Grits and Flags. 



CoNisTON Grits. 

 =:Zone of Monograptus bohemicus (upper part). 

 The main mass of these grits, estimated by Mr. Aveline to have 

 a thickness of 4000 feet, is unfossiliferous. Two interesting fossil 

 horizons are found, however, viz., the Winder Grit, described by- 

 Prof. Hughes in the Geological Survey Memoir on the district 

 around Kendal, Sedbergh, and Tebay (see first edition, published in 

 1872), with a set of fossils enumerated in the two editions of that 

 Memoir, which it is not necessary to print here ; and the " sheerbate 

 flags " exposed in Pennington's Quarry, on the east side of Trout- 

 beck, which contain the three Monograpti enumerated as occurring 

 in the Upper Coldwell Beds, colonvs, bohemicus, Eoemeri, along with 

 Cardiola interrupta and Orthoceras primcevum. 



Bannisdale Slates. 

 =Zone of Monograptus leinlwardinensis. 

 A considerable number of fossils have been found scattered through 

 the Bannisdale slates (whose thickness is given by Mr. Aveline as 

 5,200 feet). They are recorded from various localities, such as 

 Tebay Gill, Crook of Lune, Bowness, etc., and a list of these fossils 

 ■will be found in the Survey Memoir previously alluded to. Fossils, 



