12 SUPPLEMENT TO GREAT OOLITE MOLLUSCA. 
CrrireLLa Lycertna, Buv., sp., Lyc. and Mor., sp. 
CERITELLA RIssorpEs, Mor. and Lye. Gr, Ool. Monog., i, tab. 9, p. 7, 1850, non 
Pleurotoma rissoides, Buv. Mém. Soc. Verd., t. ii, pl. 6, 
fig. 9. 
OrtHostoma Lycerrea, Buv. Paléont. de la Mense Atlas, p. 32, 1852. 
TUBIFER PLIcatTus, Piette. Bull. de la Soc. Géol. de France, 2 sér., t. xii, pl. 13, 
p- 587, figs. 7—8, 1857. 
IT avail myself of the opportunity of giving another figure of this pretty species of 
Ceritella, as the magnified figure in Plate IX does not sufficiently exhibit the neatness and 
angularity of the volutions of the spire. M. EH. Piette, in a memoir entitled “ Deserip- 
tion des Ceritheum enfouis dans les dépdts bathoniens de |’Aisne et des Ardennes,” pub- 
lished in the work above quoted, rejects the claim of Ceritella to be regarded as a new genus ; 
but figures the present and also another Minchinhampton species of Ceritella as examples of 
his proposed new genus Tubifer, under the names of Tubifer plicatus and Tubifer Acteontfor- 
mis. It isa satisfaction to discover this singular and unwitting testimony to the correctness of 
our appreciation of this generic form. 
In the Atlas to the ‘ Palaeontology of the Mense,’ page 32, M. Buvignier shows that we 
were mistaken in supposing that our little Ceritella is the Plewrotoma rissoides of that author's 
memoir above quoted, and which he subsequently assigned to his proposed new genus 
Orthostoma; i this instance, also, our genus Cervtel/a has the priority. 
CrrrreLta Morrisxa, Buv., sp. Pl. XLIV, fig. 22. 
CERITELLA LonGiscata. Gr. Ool. Monog., i, tab. 9, fig. 14, p. 40, non Pleurotoma 
longiscata, Buvig., Mem. Soc. Phil. Verdun, pl. 6, fig. 8. 
OrruostomMa MorrisEa, Buvig. Paléont. de la Mense Atlas, p. 32. 
In this, as in the last species, the indifferent figures in the earlier memoir of M. 
Buvignier led to the error of assigning our Great Oolite shell to his Plewrotoma longiscata 5 
the specific name proposed by that gentleman in his ‘ Palseontology of the Meuse’ is here 
adopted. 
CurITELLA rusirormis, Lyc. Tab. XLV, fig. 4. 
Testa parva elongata, fusiformi, leve; anfractibus 5, latis, subplanis, anfracte 
ultimo magno, subcylindrico, apertura elongata, angusta, antice et postice valde contracto, 
Shell small, elongated, fusiform, smooth ; spire moderately elevated ; volutions 5, wide 
and nearly flat, the last volution large and cylindrical; the aperture is elongated, narrow, 
and much contracted at both its extremities, its length slightly exceeding that of the 
spire. 
