Vol. 52.] LLANDOVERY AND ASSOCIATED ROCKS OF CONWAY. 



281 



Band No. 1. — Lithologically this band differs from any of the 

 other graptolite-bearing bands seen in this section. It may be 

 roughly separated into two divisions : — 



(a) Lower. Sandy grey bed. 



(b) Upper. Flaggy bed, Btained bright red. 



In the lower of these two divisions the graptolites are very 

 numerous but fragmentary, and for the most part very badly pre- 

 served ; those in the upper division are more easily determinable. 

 We obtained the following fossils : — 



Monograptus pandus (Lapw.). 0. 



runcinatus, var. (Lapw.). 



— — exiguus (Nich.). 0. 



nodifer (Tullb.). 



Hisingeri, var. nudus (Lapw.). 



, var. jaculum (Lapw.). 



broughtonensis (Nich.). 



Monograptus speciosus (Tullb.). 



crispus (Lapw.). 



turriculatus (Barr.). 



Bec/a (Barr.)? 



? urceolus (Richter). 



Petalograptus palmeus (Barr ). 

 Diplograptus tamariseus (Men.). 



The unfossiliferous flagstones are very similar throughout ; they 

 consist of pale grey flaggy beds, occasionally somewhat gritty, and 

 are often very hard. Some of the upper beds are speckled. 



Band No. 3. — This soft mudstone-band has yielded the following 

 forms : — 



Monograptus pandus (Lapw.). 



runcinatus, var. (Lapw.). 



exiguus (Nich.). C. 



turriculatus (Barr.). C. 



cf. cygneus (Tornq.). 



Monograptus ? urceolus (Richter). 



ci'.jiexuosus (Tullb. j. 



capillaceus (Tullb.). 



Petalograptus palmeus (Barr.). 



Band No. 5. — From this band we have identified 



Monograptus galaensis (Lapw.). 



Fleming ii (Salter). 



? urceolus (Richter). 



Proteus (Barr.). 



Petalograptus palmeus (Barr.). 

 vat us (Barr.). 



Monograptus turriculatus (Barr.). 



pandus (Lapw.). 



runcinatus, var. (Lapw.). 



Hisingeri, var. nudus (Lapw.). 



exiguus (Nich.). 



crispus ? (Lapw.). 



Band No. 7. — This contains 



Monograptus turriculatus (Barr.). C. 



exiguus (Nich.). 



Hisingeii, var. nudus (Lapw.). 



pandus (Lapw.). 



Band No. 9. — This bed is peculiar, because of its being stained 

 bright yellow ; it has yielded 



Monograptus speciosus (Tullb.). 



retrofiexus ? (Tullb.). 



Diplograptus tamariseus (Nich.). 



Monograptus pandus (Lapw.). 



turriculatus (Barr.). 



■ crispus (Lapw.). 



■ » exiguus (Nich.). 



priodon (Bronn). 



Hisingeri, var. nudus ? (Lapw.). 



Band No. 11. This band consists of black flaggy mudstones, deeply 

 weathered and often iron-stained. It breaks characteristically into 



Monograptus Hisingeri, var. jacidum 



(Lapw.). 

 Petalograptus ovatus (Barr.?). C. 



palmeus (Barr.). C. 



Eetiolites Geinitzianus (Barr.). 



