We iat 
952. TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
M. socralis, Ald., 6 folds, anus fringed, dors. tub. 
horse-shoe, 4 bars on fold, dors. lam. entire, sandy, 
eregarious. 4 in., shallow w. S. coast. 
M. holttana, Hrdn., 6 folds, dors. tub. serpentif., 
hairs but little sand on test. #in. W. of Ireland, 
10 fms. 
M. occulta, Kupf., 7 folds, dors. tub. horse-shoe, dors. 
lam. toothed, whole body sandy. 1 in. Shallow 
w. 8S. and W. coasts. 
M. oculata, Forb., 7 folds, siphonal region alone free 
from sand, and retractile between folds of test. 1 
in. Gen. distr. Shallow w. 
M. cepiformis, Hrdn., 7 folds, globular, not attached, 
no sand. #1in. S. coast, shallow w. 
M. citrina, A. & H., 7 folds, attached by left side, no 
sand. 4+ in. under st., litt. HE. and W. coasts. 
CTENICELLA, L-D., as Moztcuua, but branchial and 
atrial lobes laciniated. 
C. complanata, A. & H., 6 folds on left, 7 on right, 
depressed, attached, sandy, 4 in. 
In conclusion, I need scarcely say that I shall be very 
grateful for suggestions, and, if the work is carried on, for 
any information from specialists about less known species, 
and the discrimination of allied forms, and for specimens, 
and also for references to any descriptions which might 
be likely to escape my notice. 
