﻿76 BRITISH FOSSIL CEPHALOPODA. 



of the Lake district, as seen between Kirby Lonsdale and Malham, near Settle," 

 Geol. Mag., vol. iv. p. 346, records Lituites giganteus, Orthoceras primosvum, 

 0. subundulatum, 0. ventricosum (?), 0. ludense, 0. bullatum, and 0. angulatum, from 

 the Ooniston Flags. 



1867. — R. Dixon, " Upper Silurian Fossils," Transactions of the Woolhope 

 Naturalists' Field Club, Fossil Sketches, No. 1, gives figures of Orthoceras bullatum, 

 0. ibex, 0. ludense, 0. annulatum, and Phragmoceras pyriforme, from the neighbour- 

 hood of Hereford. 



1868. — Nicholson, 'An Essay on the Geology of Cumberland and Westmore- 

 land.' In this book is recorded Orthoceras Brongniarti, from the Dufton Shales, and 

 from the Coniston Limestone is given M'Coy's previously published list, with the 

 addition of 0. politum and 0. vagans ; and from the Coniston Flags, 0. primosvum. 



1868. — Bigsbt, 'Thesaurus Siluricus; the Fauna and Flora of the Silurian 

 Period.' The Cephalopoda recorded in this catalogue as occurring in Great Britain 

 are Actinoceras 4, Ascoceras 1, Cycloceras 5, Cyrtoceras 9, Endoceras 1, Gomphoceras 2, 

 Lituites 11, Oncoceras 4, Orthoceras 73, Phragmoceras 9, Piloceras 1, Tretoceras 1, 

 Trochoceras 2, Trocholites 2 ; but these numbers are subject to discount, since when 

 a species has been referred to two genera it is found enumerated under both. There 

 are also several unpublished names. 



1869. — Salter, ' Explanation of Sheet 24 of the Geological Survey of Scotland,' 

 records Orthoceras ibex and Lituites cornu-arietis, from the Wrae Limestone. 



1869. — Morton, " The Geology and Mineral Yeins of the country round Shelve, 

 Shropshire, with a Notice of the Breidden Hills," Proc. Liverpool Geol. Soc, records 

 Orthoceras Avelinii and 0. encrinale from the Lower Llandeilo, and 0. conicum and 

 Lituites cornu-arietis from Upper Llandovery of this district. 



1869. — Nicholson, "Notes on the Green Slates and Porphyries of the neigh- 

 bourhood of Ingleton," Geol. Mag., vol. vi. p. 213, records Orthoceras Brongniarti (?), 

 from the former. 



1869. — Baily, 'Figures of Characteristic British Fossils,' with descriptive 

 remarks, Pt. 1. He gives original figures and notes of Orthoceras elongatocinctum 

 and 0. vagans, from Bala Beds. 



1870. — Baily, 'Explanatory Memoir of Sheet 95 of the Geological Survey of 

 Ireland,' records Orthoceras subgregarium from Upper Llandovery rocks, Cong. 



1870. — D. J. Brown and J. Henderson, " On the Silurian Rocks of the Pent- 

 land Hills," Trans. Edinb. Geol. Soc, vol. i. p. 23, record Orthoceras Maclareni, 

 0. subundulatum, 0. gregarium, 0. excentricum, 0. angulatum, Phragmoceras com- 

 pressum and Lituites sp., from beds as numbered by the Geological Survey. 



1871.— Geikie, A., " On the Order of the Succession among the Silurian Rocks of 

 Scotland," Trans. Geol. Soc. Glasgow, vol. iii. p. 74, records various Cephalopoda, 

 but apparently the data are all derived from previous lists. 



