ee ee ee a ee 
Rey. A. M. Norman on new British Species of Ostracoda. 49 
subrectus; altitudo maxima pone medium sita. Forma desuper 
- spectata compressa, in medio latissima, ad extremitates gradatim 
zequaliter diminuens. Latitudo altitudine multo minor. Valva- 
rum superficies levis, margaritacea, polita, sparse et minute punc- 
tata, zona ciliorum prope marginem sita circumdata. Color albi- 
dus. Long. vix ;3; unc. 
Habitat mare ad Berwick in regione Northumbriensi. 
Elongated bean-shaped ; dorsal, posterior, and anterior mar- 
gins rounded ; ventral margin deeply concave before the middle; 
the highest part of the valves is towards the posterior extremity. 
The form, as seen from above, is compressed, the breadth gra- 
dually and equally diminishing from the centre to the extremi- 
ties. The greatest diameter is greatly surpassed by the height. 
The surface of the valves is smooth, polished, and pearly, merely 
impressed with a few scattered punctures; encircling the valves 
at a short distance from their margin, runs a fringe of cilia 
ranged in single file, which forms a marked characteristic in the 
species. Colour white. Length not quite 3, inch. 
Found among shell-sand at Berwick-on-Tweed, Sept. 1857. 
Cythere (Bairdia) inflata, n. sp. Pl. III. figs. 6-8. 
Bairdia subdeltoidea, var., T. R. Jones, Entomost. Cretaceous Formation of 
England, p. 23, and Entom. Tert. Formation, p. 52. 
Cythere diehoiden, Brit. Mus. Cat. Brit. Crust. p. 108. 
Bairdia subdeltoidea, A. White, Pop. Hist. Brit. Crust. p. 293. 
Forma ovalis, maxime tumida; margines omnes arcuati; antice ali- 
quantum altior. Forma desuper spectata ovalis, in medio latior, 
ad extremitates paulum diminuens. Latitudo altitudoque fere 
subsequales. Basis valde convexa. Valvarum superficies omnino 
levis, nisi minutissimis punctis subtiliter perforata. Valvarum 
commissura et in ventrali et in dorsali aspectu maxime sinuata. 
Color albus. Long. vix 4; unc.; alt. 2 une. 
Habitat fretum, qui Firth of Clyde vocatur, in Scotia occidentali. 
Carapace oval, so tumid in every part as to be nearly cylin- 
drical; all the margins convex; a little lower behind fhan in 
front. The form, as seen from above, is oval; the sides very 
convex, the point of greatest breadth in the centre. The height 
and breadth are nearly the same. The base is very convex. 
Surface of the valves very smooth, fine punctures being the only 
sculpture which the microscope reveals. A marked characteristic 
of the species consists in the strongly waved line which the 
junction of the valves presents both on the ventral and dorsal 
margins. The shell is pure white. Length not quite <4, inch ; 
breadth 2; inch. 
Found by myself, in 1854, among shell-sand dredged in 
Lamlash Bay,—a locality whence Mr. I’. Rupert Jones has also 
procured the species. 
Ann. § Mag. N. Hist. Ser. 3. Vol. ix. 4, 
