LIFE-ZONES IJT THE CARBONIFEROUS ROCKS. 289 



Mr. Rhodes has sent several sections shown by the streams examined by 

 him, which are appended, and the fossils he has collected are shown in 

 tabular form. The results of Mr. Tait's collecting are also shown in tabular 

 form, and a comparison of the two sets of fossils is most instructive ; for 

 while Mr. Rhodes' specimens are all members of the fauna of the 

 Carboniferous Limestone, in the Pendleside fauna only a few Brachio- 

 pods are common to it and the Carboniferous Limestone. 



The work done by these collectors largely confirms the results ex- 

 pressed in the paper read before the Geological Society last February by 

 the Secretary to this Committee and Mr. J. A. Howe, which has just 

 appeared in the ' Quarterly Journal ' of the Society. Mr. Tait has traced 

 the Pendleside fauna over a wider extent of country locally. Lately the 

 writer has obtained this fauna, at the same horizon, in North Stafford- 

 shire and Derbyshire. It is an interesting fact that he has this year 

 obtained Chcenocardiola (Ltinulacardium) Footii and Posidonomya rnem- 

 hranacea in these beds, hitherto only known from the Upper Limestone 

 shales of Ireland. 



The great point of interest in Mr. Rhodes' collection is the finding in 

 Edendale of many species, hitherto only found in the shales of the Car- 

 boniferous Limestone series of Scotland : Parallelodon semicostatum, 

 Nucula luciniformis, N. oblonga, Nuculana Icevistriata, Protoschizodics 

 impressus, Cypricardella annce, C. rectangtdai-is, Sanguinolites plicatus. 

 S. variabilis, Sedgwickia scofica, Entoliutn Soiuerbyi, Eumnpliahhs carbon- 

 ariuK, Ilyalostelia j)arallela, and Serpulites membranacea. 



This fact is important as an aid to correlation of the Limestone series 

 of Scotland with portions of the Carboniferous series of England. 



Tne Cephalopoda have been submitted to Dr. Foord and Mr. Crick, the 

 Sponges to Dr. G. J. Hinde, the Crustacea to Dr. H. Woodward. The 

 Secretary has determined the Lamellibranchiata and Bi-achiopoda. 



Dr. A. H. Foord reports about the Cephalopoda sent from Mr. Rhodes' 

 series : ' They clearly represent an horizon high up in the Carboniferous, 

 i.e., that of the Upper Limestone gi-oup of the Scottish Carboniferous 

 Limestone series. The species I particularly refer to are Orthoceras 

 sidcatum (Flem.), Cyrtoceras (Meloceras) mgosum (Flem.).' The Lamelli- 

 branchiata and small Gasteropoda strongly confirm this view. At the same 

 time the absence of the Pendleside fauna both in Scotland and the North 

 of England is important. The typical Cephalopoda and Lamellibranchiata 

 of this group have not yet been found as a fauna where the Scotch type 

 of fauna occurs. The Pendleside fauna has been obtained in beds of the 

 same series at .several places in S.W. Yorkshire, N. Staffordshire, Cheshire, 

 Derbyshire, and Co. Dublin, and the characteristic zone-forms appear to 

 be : Glyphioceras reticidatuni, G. bilingue, G. spirals, DiinorpjJioceras 

 Gilbertsoni, G. Loonyi, Gastrioceras carbonarius, G. Listen, Orthoceras 

 Steinhaurei, Avicidopecten papyraceus, Posidonomya Becheri, P. mem- 

 branacea, P. corrugata, Posidoniella Icevis and P. minor, Nuculana stilla, 

 Schizodus antiqious, Chcenocardiola Footii, Leiopteria longirostris, Macro- 

 cheiliria Gibsoni, J/, reticulata, M. elegans. 



It is interesting to note that Mr. Rhodes found Productus giganteus 

 and P. latissimus as high as the Main Limestone in the Hawes district, 

 and that he obtained P. giganteus and Chcffetes septosus with Lithostro- 

 tion plentifully 33 feet over the Hardraw Scar Limestone at Mill Oill, 

 Asgrigg, and I have lately obtained all three in the Main Limestone of 

 Weardale. 



190L ■ T7 



