135 
ARCA Branderi. 
TAB. CCLXXVI.---Figs. 1 and 2. 
Spec. Cuar. ‘Transversely elongated, rhombic, 
gibbose, finely decussated ; beaks distant : 
longitudinal striz strongest ; teeth numerous ; 
edge internally entire. | 
Asove twice as wide as long: the hinge line is long 
and straight, terminated at each end by an angle that 
almost forms an ear: from the beak proceeds an obtuse 
ridge towards the front of the longer side; the space be- 
tween the beaks is plain except three or four impressed 
strie, which are nearer perpendicular than usual, 
I have seen several specimens of this Arc from Barton 
Cliff, but cannot refer it to any species before described, 
nor do I think it has been found in France. The shell 
represented at fig. 2, is in the Woodwardian collection 
at Cambridge, the other was given me by Miss Bea- 
minster ; it is by no means common; I have named it in 
commemoration of Brander, whose exquisite plates of 
Hampshire fossils will ever be admired. 
ARCA appendiculata. 
TAB. CCLXXVI.-—Fig. 3. 
Spec. Cuar. Transversely elongated, rhombic, 
gibbose, decussated; beaks rather distant - 
two oblong appendages upon the space be- 
tween the beaks ; edge toothed within. 
Srroncty resembling the last, but wider; the longitudi- 
nal ridges are not deeply cut by the lines of growth, they 
