16 THE ENTOMOSTRACA OE 



than swimming in the water and crawHng on the weeds. Hence it has escaped 

 observation to some extent, and is not noticed in Dr. 

 Baird's ' History of the British Entomostraca.' In its 

 love of the mud and habit of crawling^ it so mucli 

 resembles the Candonce that I have been anxious to 

 verify Dr. Ramdohr's description of the species ; and 

 I find that it truly possesses the pencilled tufts charac- 

 teristic of the genus Cypris. See Woodcut, fig. 1- 

 1. Cypris gibba. (See also the figures by Fischer, Koch, &c.) 



aa. Upper pai/ofaiitenna;. Cypvis ffihha occwx's, io^^A in the Peat-marl of Cam- 



'f' Fh-rpa'ir of feet" ''"*'^""^' bridgeshirc before referred to (where, however, only 

 young specimens were met with) ; in a Pleistocene deposit at Wear Farm, near the 

 Reculvers, described by Mr. Prestwich in the ' Quart. Journ. Geol. Soc.,' xi, p. 112; 

 and plentifully in the fluviatile deposits of Grays and Clacton, in Essex. 



From the association of a few marine or estuarine fossils {Balcmiis and GlohuUna) 

 with C. gihhu in the Pleistocene sands near the Reculvers, it appears that this species 

 can inhabit brackish water. 



Genus — Candona, Baird. {Cypris, Auctorum.) 



Animal creeping ; (inhabiting fresh water and found on or in the mud ; generally 

 larger than Cypris-^ eye single (coalesced); the upper pair of antenna; plumed; the 

 lower pair plumeless, merely setiferous and hooked.^ Carapace like that of Cypris. 



No. 1. Candona reptans, Baird. Plate I, figs, la — 7 e. 



Candona keptans,^ Baird. Hist. Brit. Entom., p. IGO, t. 19, fig. 3. 



— — Jones. Annals and Mag. Nat. Hist., 2d ser., vi, p. 27, t. 3, fig. 7. 



Cypris keptans, Liljeborg. De Crustaceis, &c., p. 123, t. .xi, figs. 21 — 23; t. xii, figs. 7 — 9. 



inch. 

 Length, ^ Recent : Britain ; Europe. 



Post-tertiary : Berkshire ; Cambridgeshire ; Lincolnshire ; Essex. 

 Pleistocene : Essex. 



^ According to Liljeborg, in the species which he refers to Candona the second pair of maxillae are 

 without branchial appendages. 



- Leach's Cypris viridis ('Edinb. Encycl.,' t. 221, fig. 2), and C. nephroides {' EncycL Brit. Suppl.,' 

 20, figs. 1, 2), somewhat resemble Candona reptans (as pointed out to me by Dr. Baird) ; but it is 

 impossible to come to a satisfactory determination from Leach's figures and notes. 



