THE CRETACEOUS FORMATION. 
33 
No. 6. Cytherella (?) Bosquetiana, nobis. Tab. VI, fig. 23 a — c. 
INCH. 
Length, 
Height, yL Detritus, Charing. 
Thickness, 
Carapace nearly oblong, somewhat arcuated, slightly convex ; rounded anteriorly 
almost squared posteriorly. Surface of valves roughened and finely granulated. 
Dorsal asjject narrow acute oval ; anterior ovate. 
C. Bosquetiana differs from C. tnmcata in being arcuated and roughened, and 
especially in being convex centrally instead of posteriorly. 
We have met with only one specimen, a closed carapace, of this species, which 
is named in honour of M. Bosquet, author of the elaborate and elegant memoir on the 
Entomostraca of the Maestricht Chalk. 
