CYTHERE. 
169 
2. Cythere renieormts. Tab. XX, figs. 5, 5 a-f. 
Cythere reniformis, Baird , Trans. Berw. Nat. Club, i, 98, t. 3, 
f. 5, 1835 ; and ii, 153 ; Mag. Zool. and 
Bot., ii, 142, t. 5, f. 16-22. 
— M. Edwards , Hist. Nat. Crust., iii, 408. 
Shell reniform, rough with hairs ; both extremities of 
nearly equal size, anterior a little flatter than posterior. 
The centre of the valves is covered with a calcareous- 
looking crust, which is rather of a darker colour than the 
rest of the shell, and appears studded all over with short 
spines. The colour of the shell is of a light brownish 
yellow ; and the legs and antennae of the animal are 
brightly marked with the same hue. 
It approaches the C. lutea , Mull., in shape ; but differs 
somewhat in colour, in being roughly hairy, and having 
the valves covered with the hard crust. 
Hab . — Coast of Berwickshire • at Cockburnspath, Ber- 
wick, &c., 1835. N. Foreland, near Dover, August and 
September, 1849. - 
3. Cythere albo-maculata. Tab. XX, fig. 7. 
Cythere albo-mactjlata, Baird , Mag. Zool. and Bot., ii, 142, t. 5, 
f. 23, 1838 ; Trans. Berw. Nat. Club, ii, 153. 
— M. Edwards , Hist. Nat. Crust., iii, 408. 
Shell oblong, a little flatter at the anterior extremity, 
gently rounded on the upper margin, and deeply sinuated 
on the lower, near the anterior extremity. Both the ex- 
tremities and the lower margin are densely hairy. The 
central portion of the valves is covered with a calcareous- 
looking crust, as in the last species, and is studded all 
over with short spines, except where it is marked with two 
white, smooth, shining spots of considerable size. The 
colour of the shell is altogether of a dull brown. 
Hab . — Berwick Bay, 1835; not very common ; near 
Dover, September 1849. /#&/. 
