682 ME. J. E. MAEE AND DE. H. A. ISTICHOLSON 



of only two feet, and we have obtained no fossils from it, but it is 

 shown by its position to be the representative of the " Barren Band " 

 of SkelgiU. 



Ac 1. The preceding beds pass into three feet of Graptolitic 

 shales of a leaden colour, except near the centre, where they are 

 blacker. This is the C7in^a?ii-band, and, like the corresponding 

 band at SkelgiU, it contains a great abundance of ClimacQgrajjtus 

 normalis along certain lines, along with : — 



Monograptus Clingani, Carr. I Monograptus crenularis, Lapw. 

 Nicoli, Rarlcn, \ 



M. Clingani is the prevailing form. 



Ac 2. The overlying mudstones, which present the usual passage 

 into the shales above and below, are only one foot five inches in 

 thickness. They consist of pale-green, calcareous shale, with 

 numerous dendritic markings, and containing few fossils except 

 along one bedding-plane, where they are very numerous, indeed far 

 more so than in any one of the non-Graptolitic bands of the Stockdale 

 Shales of any other locality whatsoever. Two nodular, calcareous 

 bands are seen near the centre of the zone, with the usual chocolate- 

 coloured earthy residue left where the nodules are weathered out, 

 and between these bands occurs the bedding-plane alluded to above. 

 Besides this, a few fossils are found in the lower calcareous band. 

 Fossils : — 



Ampyx aloniensis, n. sp. 

 Harpes judex, n. sp. 

 Calymene BkimeDbachii, Brongn. 

 Proetus brachyj)ygus ? 

 Encrinurus punctatus, Wahl. 

 Pbacops mucronatus, Brongn. 



Phacops elegans, Tar. glaber. 



■ elegans, B(£ck ^- Sars. 



Acidaspis. 



Leptsena quinquecostata, M'Coy. 



cf. sericea, Sow. 



Also occasional plates of a Cystidean. 



Yery many heads of the Amjjyx are seen, and all the fossils cf 

 the A.-aloniensis zone of SkelgiU appear to occur here, with a few 

 others, so that there would be no difficulty in fixing the horizon of 

 the zone, even if it were not seen in the same position as at SkelgiU, 

 viz. between the Clingani-'hdJ^d. and the sjnnigeriis-zoue. 



Ac 3. The spinigenis-zone of BrowgiU is about two feet thick; 

 but the passage into the mudstones above is so gradual that it is 

 difficult to fix upon the exact Hne of demarcation. The lower part 

 of the zone consists of black shales, weathering olive-brown, and 

 with many Graptolites along certain bands, whilst the upper part is 

 composed of shales of many colours, some showing the lozenge- 

 pattern also found in the beds of this zone at SkelgiU and, indeed, 

 in all places where it is well developed throughout the district, so 

 that we need not caU attention to this feature in our future de- 

 scriptions of the sections. 



Monograptus spinigerus occurs as usual in countless multitudes, 

 with its customary associates, which we did not trouble to collect ; 

 but one specimen of Rastrites Tiyhridus was obtained, and we call 

 attention to it, as it has not turned up in the sjnnigf ems-zone 

 elsewhere. 



