description of the fossils. 
229 
M. tumida. Ph. PI. XVI. fig. 2. Bolland ; Kildare. 
Turrited, smooth, finely striated, volutions remarkably convex, numerous. 
M. scalarioidea. Ph. PI. XVI. fig. 3. Bolland. 
Elongate, volutions broad, slightly convex, with longitudinal equal filiform elevations. 
M. rugifera. Ph. PI. XVI. fig, 26 . Otterburri ; &c. ; Northumberland. 
Elongated to a fine point ; whorls convex, interiorly concave and adpressed at the 
suture ; on the lower half of each oblique, slightly arched, very strong ribs, prominent 
interiorly. In young shells the ribs cover all the whorl. 
Turriteela ? tenuistria. PI. XVI. fig. 4. 
Imbricato-conical ; whorls broad, plane, angular below, spirally and obliquely 
striated. 
T. spiralis. Ph. PI. XVI. fig. 5. 
Obliquely conical, imbricate; whorls broad, reticulato-striate, with spiral threads, 
Var. with the sutural and lower edges prominent. 
T. suturalis. Ph. PI. XVI. fig. 6. Bolland ; Kirby Lonsdale. 
Conical, whorls broad, prominent at the sutural and lower edges, concave below 
the former ; smooth. One specimen has the sutural and lower edges of a milk white 
colour. 
T. taaiiata. Ph. PI. XVI. fig. 7. 
Turrited, elongate ; volutions broad, very convex, with a mesial flat band ; striae 
flexuous. 
The specific differences of these turritellae? must be regarded as 
provisional only, until more specimens have been compared. 
T. triserialis. Ph. PI. XVI. fig. 25, Otterburn ; Northumberland. 
Elongate, volutions convex, with three medial, one sutural and one inferior, spiral 
granulated lines. 
T. acicula. Ph. Otterburn ; Northumberland. 
Very elongate, volutions with three medial spiral granulated lines, the upper one 
set on an angle. 
Buccinum. Sow. or rather Melanopsis? to judge from what can 
be seen of the apertures. 
B. parallele. Ph. PI. XVI. fig. 8. Bolland. 
Upper part of each whorl plane, and striated, the lower parts convex, with many 
equal spiral furrows. 
B. imbricatum. Sow. PI. XVI. fig. 9, 17, 18, 19, 20. Bolland; Isle 
of Man. 
Ovato-lanceolate, whorls slightly convex, smooth, finely striated: striae nearly 
direct. 
G g 2 
