424 Mr. C. Lapworth on the Geological 



Coenograptus pertenuis, Lapw. Lasiograptus ? bimucronatus, Nich. 



Leptograptus flaccidus, Hall. Diplograptus foliaceus, Murch. 



Dicellograptus divaricatus ?, Hall. dentatus, Brongn. 



patulosus, Lapw. angustifolius, Hall. 



sextans, Hall. tricornis, Carr. 



Dicranograptus formosus, Hopk. Whitfieldi, Hall. 



ziczac, Lapio. euglyphus, Lapw. 



Nicholsoni, Hopk. Climacograptus bicornis, Hall. 



ramosus, Hall. Scharenbergi, Lapw. 



Clatbrograptus cuneiformis, Lapw. perexcavatua, Lapw. 



Glossograptus Hincksii, Hopk. ? cselatus ?, Lapw. 



Lasiograptus Harknessi, Nich. 



The lowest or Stinchar Division of the Lower Palaeozoic 

 rocks of Girvan includes the two conglomerates of the valley 

 of the Stinchar, with an intermediate limestone (Craighead) 

 and some overlying shales. The Crustacea and Brachiopoda 

 are of a Lower Bala type with numerous Llandeilo (Trenton) 

 affinities. The Graptolites I have collected from this division 

 include, among others, the following Glenkiln forms : — 



Dicranograptus formosus, Hopk. Climacograptus bicornis, Hall. 



ramosus, Hall. cselatus, Lapw. 



Glossograptus Hincksii, Hopk. Diplograptus tricornis, Carr. 



Lasiograptus Harknessi, Nich. dentatus, Brongn. 



Dicellograptus moffatensis?, Carr. foliaceus, Murch. 



Leptograptus flaccidus, Hall. angustifolius, Hall. 



Climacograptus Scharenbergi, euglypbus, Lapw. 



Lapw. 



Ireland. — Every form of Graptolite enumerated in the Glen- 

 kiln list given above has been detected in similar association 

 in corresponding rocks (Ballygrot beds) in the Lower Palae- 

 ozoic strata of county Down by my friend Mr. William 

 Swanston, F.G.S., at Ballygrot and other localities to the south 

 of Belfast Lough*. 



Portions of the same fauna have also been recognized at 

 several localities in the south of Ireland. In Tramore Bay, 

 county Waterford, the following forms were collected by 

 officers of the Geological Survey, from dark shales interbedded 

 with fossiliferous rocks full of Lower Bala fossils j". 



Didymograptus, sp. (Hisingeri, Diplograptus foliaceus, Murch. 



Bailg). Climacograptus bicornis, Hall. 



Dicellograptus sextans, Hall. Dicranograptus ramosus, Hall. 

 Coenograptus gracilis, Hall. 



In the neighbourhood occur Leptograptus flaccidus, Hall, and 

 a species of Didymograptus (Hisingeri). 



* Swanston, Trans. Belfast Naturalists' Field-Club, Appendix, 1876- 

 1877. 



t Memoirs Geol. Surv. Ireland, Explanation Sheet 167, Sec, p. 23, 

 et seq. ; also Baily, Quart. Journ. Geol. Soc. 1869, vol. xxv. pp. 158-162. 



