﻿GEOLOGICAL DISTRIBUTION OF SPECIES AND VARIETIES OF 

 BRITISH TRIGONItE, WITH REFERENCES TO THE FIGURES AND 

 DESCRIPTIONS IN THE PRESENT MONOGRAPH. 



TRIASSIC SYSTEM. 

 Rfieetic Formation : allied genus, Myophoria. 



Myophoria postera, Querist. PI. xli, figs. 6, Oa, 7,7 a, 8,8 a, 9, 9 a 



PAGE 



212 



JURASSIC SYSTEM. 



LowEE Lias. 

 CosTAT^ ? Trigonia modesta, Tate. PI. xli, figs, 13, 13a ^ 



Middle Lias. 

 Glabb^ Trigonia Lingonensis, Dmn. PI. xxii, figs. 1, 1 a, 2, 3, 4 



Upper Lias. 



ScAPHOiDEiE T. pulchella, ^^. PI. xxxviii, figs. 10, 11, 12, 12 a 



U KDDLATiE T. literata. Young ^ Bird. PI. xiv, figs. 1, 1 a, 2, 3, 4 . 



212 



98 



185 

 64 



MIDFORD OR SUPRA-LIASSIC SANDS. 



Undulate T. Leckenbyi, Lye. PI. xvi, figs. 1, 2 



„ f T, formosa. Lye. PI. v, figs. 4, 5, 6 . 



Clavellat^ i ^ ^ 7 & . > 



(. T. Ramsayi, Wright. PI. vi, fig. 6 . 



CosTAT^ T. denticulata, ^o. PI. xxix, figs. 1, 2, 3, 4 . 



71 



3a 



49 



152 



ScAPHOlDEiE. 



Infekior Oolite. 



(- T. Bathonica, Lye. PI. i, fig. 3 



T. duplicata, Sow. PI. i, figs. 8, 9, 10 

 J^ T. gemmata. Lye. PI. i, fig. 7 



— {car. bifera). Lye. Footnote 



i^T. recticosta, Lye. PI. i, figs. 4, 5, 6 



17 



14 



15 



. 239 



16, 198 



