92 SUPPLEMENT TO GREAT OOLITE MOLLUSCA. 
CERITHIUM (?) NEGLECTUM, Zyc. Tab. XLIV, fig. 21. 
Testa parva, subulaba, anfractibus (circa 7) subplanis, longitudinaliter costatis, costis (5), 
magnis, depressis, subobliquis, a sinistro ad dextrum versus, apertura parva, canala (?). 
Shell small, subulate ; volutions (about seven) flattened, with five longitudinal large, 
‘depressed, and smooth coste, which are directed somewhat obliquely from left to right, 
and are slightly interrupted by the sutures; the aperture is small and depressed, the canal 
is imperfect. 
The extremities of the costee do not always exactly accord with those of the next 
volution, which gives some irregularity to the appearance of the volutions; no traces of 
encircling striations are visible. 
‘The spire is not angulated as in C. pentfagonum, the subulate figure and plain surface 
distinguishes it from C. seacostatum. 
Geological Position and Locality. The Great Oolite of Bussage; collected by 
E. Witchell, Esq. 
Crritarum costiceruM, Piette. Tab. XLI, figs. 11, 11 a, 4. 
Testa inflata, subcylindrica, anfractibus (I—9), costis (12) rectis, angustis, elevatis, 
postice acuminatis, lineisque transversalibus, instructis ; apertura parva, canali recto, 
elongato. 
Shell somewhat inflated and subcylindrical, volutions (7 to 9) with the sides perpen- 
dicular, costee (12) perpendicular, narrow, and much elevated, terminating posteriorly each 
in a projecting point, anteriorly they bend inwards slightly to the suture, there are also 
regular encircling lines; the base is smooth, the aperture is small, the canal lengthened 
and straight. 
There is much variability in the elevation of the spire, and, consequently, in the 
height of the volutions; a specimen more than usually lengthened has the coste some- 
what oblique. 
Geological Positions and Localities. The Forest Marble of Laycock ; in the collection 
of W. Walton, Esq. It is recorded by M. Piette in the Great Oolite Limestones of Eparcy 
and Rumigny. 
Ceritnium (?) Wattont, Lyc. ‘Tab. XLI, fig. 16. 
Testa parva turriculata anfractibus numerosis angustis, inflatis, saturis bene impressis, 
costis rectis angustis, elevatis (circa 11) in ambitu liners regularibus cingendis ; apertura et 
canali ignota. 
