18 THE ENTOMOSTRACA OF 



No. 2. Candona Forbesii, Jones. Plate IV, figs. 8, 9, 11 a, \\b. 

 Candona Forbesii, Jones. Memoirs Geol. Survey, p. 157, t. 7, fig. 22. 



INCH. 



Length, ^ Upper Eocene : Isle of Wight and Hampshire. 



Valves oblong, rounded at the extremities, narrowest and most depressed anteriorly, 

 most convex at the posterior third ; hinder border margined with a slightly raised 

 rim ; dorsal border arched, ventral slightly incurved ; surface smooth ; fine punctations 

 are visible in transparent specimens under the microscope with transmitted light. 

 Lucid spots according to System a. 



This species much resembles the recent Candona reptans and C. Richardsoni (Jones) 

 of the Woolwich Beds ; but certain modifications of shape and proportional size 

 separate all these forms. 



Candona Forbesii occurs in great numbers, and in different stages of growth, chiefly 

 as single valves, compressed between the laminae of the shales of the Upper, Middle, 

 and Lower Hempstead Series at Hempstead Cliff, Isle of Wight ; and in a better state 

 of preservation in the pyritous bands occurring in that series. It is met with also 

 compressed in the Shales of the Osborne Series at Cliff End, Colwell Bay ; and is 

 found also at Hordwell (Mr. F. Edwards's collection). 



I have dedicated this abundant and characteristic species to Edward Forbes, 

 whose name is so intimately associated with the Hempstead deposits and their fossils. 



No. 3. Candona Richardsoni, Jones. Plate IV, figs. 12 a, 12/;. 



Candona Richardsoni, Jones. Quart. Journal Geol. Soc., x, p. 162, t. 3, fig. 13. 



INCH. 



Length, -^ Lower Eocene : Woolwich. 



Valves oblong, smooth, rounded at the extremities, depressed anteriorly, most 

 convex just posterior to the centre ; ventral border straight, dorsal border very slightly 

 curved. 



This species approaches in shape to the recent Candona reptans ; but it is more 

 oblong, and in size it is much inferior. It also resembles C. Forbesii of the Isle of 

 Wight. 



Candona Richardsoni was found by Mr. W. H. Baily, in the thin band with 

 Ilijdrobia, Planorbis, and Cyrena, in the Woolwich sand-pit. The individuals are 



