﻿JURASSIC AND TRIASSIC BRACHIOPODA. 



141 



first specimen was alluded to by d'Orbigny from Tournus (Saone-et-Loire), two others 

 were found by M. De Ferry at Chintre (Saone-et-Loire), and two more in the neighbour- 

 hood of Semur (Cote d'Or) in the lower portion of the " Calcaire a Entroques," that is to 

 say, the zones of Amm. Murchisona or Infra-Oolitic Marls. 



112. Terebratula fimbria, Sow. Dav., Ool. Mon., p. 61, PI. XII, figs. 6 — 12. 



Mr. Lycett observes in his 'Handbook on the Cotteswold Hills,' p. 164, that "this 

 species is usually separable into two forms or varieties, which may be distinguished during 

 their entire growth. The first or larger form is the more rounded, the anterior border 

 is destitute of plications ; the adult condition has marginal folds, which pass backwards 

 only a short distance from the border. The second or smaller form is more oblong and 

 compressed laterally ; the young condition has marginal folds, which in the adult state 

 become deep and lengthened, extending backwards almost to the beak ; the concentric 

 lines of growth are likewise strongly marked. It is probable that these differences are 

 referable to distinctions of sex." 



Mr. Lycett further informs me that the two varieties are well represented in my PI. 

 XII, figs. 11 and 6, representing the young and the adult form of the one; figs. 12 and 

 10 the corresponding forms of the other; all of their usual dimensions. Both occur in 

 the same bed of the Inferior Oolite. 



T. fimbria, as far as I am aware, does not appear to have been hitherto found in 

 Prance. 



113. Terebratula Bentleyi, Dav. Dav., Ool. Mon., p. 58, PI. XIII, figs. 9, 10, 



11 ; and Appendix to Vol. I, p. 19. 



Nothing new. It occurs in the Cornbrash of Rushden, Northamptonshire, and in 

 the same formation near Scarborough (Leckenby Collection ; Woodwardian Museum, 

 Cambridge), and has been obtained by Mr. J. F. Walker in the Cornbrash of Yaxley or 

 Stilton, near Peterborough. 



