46 Rev. A. M. Norman on new British Species of Ostracoda. 
tremitatesque versus multis aculeis armata. Color arenarius. 
Long. vix 8; unc. 
Forsitan Candona. Animal inspicere non potui; sed, ut naret, dum 
vivebat nullo modo conatum est. 
Aquas habitat limpidas ad Fleckney in regione Leicestrensi. 
The valves of this species are oblong, with rounded extre- 
mities, their dorsal margin nearly straight, their ventral 
slightly incurved centrally; the front portion of the valves is 
slightly higher than the hinder, while the centre, in consequence 
of the concavity of the ventral margin im that part, is the lowest 
part of the valves; their surface is very irregular, punctured, 
elevated at two points (one on either side of the centre) into 
conspicuous tuberculiform processes, and armed anteriorly and 
posteriorly with short but strong spines. The form of the cara- 
pace, as viewed from above, is narrow in the centre, on either 
side of which it swells out into the tumid tubercular processes, 
and then slopes away to subcompressed extremities. 
Colour light drab. Length not quite 2; inch. 
I have not been able to examine the animal, which possibly 
may hereafter prove to be a Candona. It made no attempt to 
swim during the day or two it was kept alive in a glass vessel. 
Cypris monstrifica approaches in outline Cypris bistrigata (Ju- 
rine), but the sculpturing of the two species is very distinct. It 
was taken in the canal at Fleckney, in Leicestershire, in August 
1856. 
Genus Canpona, Baird. 
Candona serrata, n.sp. PI. II. figs. 1-6. 
Forma elongata, aliquantum cuneiformis; margo dorsalis antice 
valde elevatus, inde ad extremitatem posteriorem descendens ; 
ventralis subrectus; extremitates rotundatee; altitudo maxima 
ante medium sita, ita ut antica pars quam postica multo est altior. 
Forma desuper spectata compressa; antica pars posticee squalis ; 
latitudo maxima mediana. Valvarum superficies foveolis impressa 
sparsisque pilis obsita; ad extremitates inferne aculeis brevibus, 
crassis, externe directis marginata. Color cinereus, macula centrali 
ovali, atque zona marginali pallidis pictus. Long. 2, une. ; lat. 
vix 3) une. 
Habitat stagna limpida prope Sedgefield in regione Dunelmensi. 
Valves elongated, somewhat cuneiform ; dorsal margin greatly 
raised in front, thence gradually descending to the posterior ex- 
tremity ; ventral margin nearly straight; anterior and posterior 
margins rounded ;- point of greatest height situated in front, the 
hinder portion of the valves being much narrowed. Surface of 
valves. irregularly marked with slightly impressed grooves, and 
clothed with scattered hairs; lower portions of the anterior and 
