TURBO. 355 
289. “* Turgo paLupiNorpEs.” Plate XXIX, fig. 2 
Description : 
Height : : ; : . 10°5 mm. 
Width . : ‘ : ; . 10°5 mm. 
Mean spiral angle : 5 , alOr. 
Shell smooth, conical, turbinate, imperforate ; substance rather thin. The apex 
is rather obtuse, with a change in the spiral angle about the third whorl. Total 
number of whorls six or seven, convex, and well marked off by the suture; without 
ornament, and rather glabrous, though fairly wide growth-lines are visible in some 
portions of the shell. The body-whorl slightly exceeds one-half of the total height, 
and is regularly convex throughout, with a full and rounded base. Aperture fairly 
wide and circular, outer lip thin; columella excavated, but only moderately 
encrusted, and marked by a narrow sinuous furrow. 
It is not intended that this form, though figured, should take rank as a species 
until we know something more of its true relationships. The aperture is more 
circular than in Bourguetia ; at the same time the shell is very thin for a Turbo, 
whilst the sutures are rather too close for a Paludina.' A single specimen, 
presumably from the Concavus-bed of Bradford Abbas. 
290. Turso (? ArapHRus) LINDECOLINUS, sp. nov. Plate XXIX, figs. 3 and 4. 
Description : 
Height é : : ‘ 9 mm: 
Width : ; 5 : . 75 mm. 
Mean spiral angle : , 55°—60°. 
Shell conical, turbinate, rather thick, not umnbilieatede spire shghtly obtuse. 
Number of whorls six, smooth, convex, and well marked off by the suture. The 
body-whorl is about half the entire height, smooth, regularly convex, and with no 
other indication of ornament than curved growth-lines ; basal angle rounded, base 
full and smooth. Aperture subcircular and rather small; outer lip thin and 
semilunar ; columella short and inclined to be straight, with a moderate callus, and 
in some specimens a slight columellar furrow. 
1 N.B.—There is a bed in the Chipping Norton district, somewhere about the junction of the 
Inferior and Great Oolites, which yields a species of Paludina in considerable quantities. 
