172 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
and tlie consequent direction and shape of the aperture. 
It is more of the shape of C. bulb as than of any other spe- 
cies I know. It is, however, probably a young specimen. 
Crucilulum piliferum n. sp. 
Shell covered with numerous erect tubular spines which 
are small towards the apex, larger towards the base ; apex 
small smooth, spirally recurved. 
Pliocene, Matura. Given as C. tubifer in my previous 
list. It may be a variety of the next species, but its plicae 
are smaller, whilst the spines furnish an easily-recognised 
character. 
Crucibuhm subsutum n. sp. 
Strongly striate, rugose, somewhat irregularly oval ; stria- 
tions with a tendency to run in pairs. 
Pliocene, Matura. Allied to C. striatum Say, under which 
name it appears in my paper on the Matura beds. 
Troclius decipiens n. sp. 
Topshaped, imperforate, ornamented by many spiral lines 
of moniliform granules ; whorls rather concave above, and 
bearing a rather broad angular keel on their lower portion ; 
base flattened, covered with lines of rather square granules, 
aperture subquadrate, wider than high, broadly angulate 
by the keel ; columella thickened, spreading into a calllus 
over the umbilicus. 
Yar. laticarinatm. 
Keel broader and higher, whorls deeply concave above, 
suture deeply impressed ; lines on the base squamosely 
granular. 
Pliocene, Matura. As Troclius granulatus in my list o! 
1864. 
