INTRODUCTION. vii 



in 1872, are noted in the Appendix (p. 59). The list of species which we have 

 seen from it is given in the Appendix (pp. 59, 60). 



§ V. Upper Greensand. — The Entomostraca from this division are but few, 

 and these have been obtained from the glauconitic arenaceous beds at Warminster 

 (Wiltshire), zone of Peden asper, and at Blackdown (Devonshire), zone of Ammo- 

 nites wflatus ; also at Ventnor, Isle of Wight. Those from Meux's Well, London, 

 are also mentioned in the Appendix (p. GO). 



§ VI. Gault of Folkestone. — From the beds of this formation at Copt Point Mr. 

 F. G. Hilton Price, F.G.S.,^ has recorded fourteen species of Entomostraca, the 

 names of which will be found in the Appendix (p. 62). 



From the Gault of Folkestone (Kent) and Godstone (Surrey), Mr. Davies 

 Sherborn, F.G.S., and Mr. Frederic Chapman, have obtained a very large series of 

 Ostracoda ; Appendix (pp. 61 — 63). The collection made by Mr. F. Chapman 

 in 1880 is fully represented in this Supplemental Monograph, but the still richer 

 results of his Examination, in 1888, of each separate zone of the Gault at 

 Folkestone, came too late to receive full justice at our hands ; its chief features, 

 however, are noted either in the text or in the Appendix. 



Soc.,' vol. xxxi, pp. 256—316; A. Geikie, 'Text-Book of Geology,' 2nd edit., p. 826; H. B. Wood- 

 ward, ' Geol. England and Wales,' 2nd ed., p. 410. 



1 ' The Gault,' by F. G. Hilton Price (1879), p. 50. 



In figuring the Ostracoda we find it convenient to place the valves with the 

 anterior end upwards (instead of to the right or to the left, as the animal would 

 be when moving). Hence the height of the valves seems on the Plates to be the 

 breadth, and is so referred to sometimes in the text. In PI. IV, figs. 5 and 6 and 

 figs. 40 and 41 have been inadvertently placed with the posterior end upwards, 

 and therefore reversed in relation to the other figures. 



