382 GASTEROPODA OF THE INFERIOR OOLITE. 
319. TRrocHUS sQuamosioR, sp. nov. Plate XXXII, fig. 5. 
Description : 
Height ; : : : 5 ee) pachoaly 
Width , : : ‘ =) 89 nm. 
Spiral angle : Paeiae 
Shell conical, not umbilicate; spiral angle slightly concave. Spire acute, 
sutures close. Number of whorls seven, flat, those at the apex without ornament ; 
the three succeeding whorls carry from two to three tuberculated and subsquamose 
spirals. The penult has four spirals, of which the third is the least prominent. 
The body-whorl has five spirals, of which the middle one is the weakest. All 
the spirals of the anterior whorls are armed with hollow spinous projections, the 
hollow inclining to the anterior side; the last spiral, constituting the basal 
periphery, is turned backwards. Base flat and smooth. Aperture rhomboidal and 
depressed. 
Relations and Distribution—Although possibly only a sport of the local 
representative of 7’. subluciensis, yet the wider spiral angle and tendency to a 
concave spire are indications which may be relied on, even when the exceptional 
preservation of the spines, exhibited in the figured specimen, is wanting. 
Rare in the ‘‘ Base-bed”’ at Lincoln. I have seen something like this form on 
a small scale in Mr. Walford’s Collection from Hook Norton. 
320. Troonus squamIGER, Morris and Lycett, 1851, Inferior Oolite variety. 
Plate XXXII, fig. 8. 
1851. Trocuus squamrieaer, Morris and Lycett. Great Ool. Moll., pt. 1, p. 62, 
pl. ix, fig. 34; pl. xiii, fig. 7. 
Description : 
Height : : : . 63 mm. 
Width . ; : . 7mm. 
Spiral angle : 2 4I68F 
Shell regularly conical, imperforate. Spire elevated and acute, though the 
actual apex is slightly obtuse. Number of whorls six, perfectly flat and increasing 
regularly ; sutures close. The ornaments consist of spiral bands distinguished by 
nodules which are squamosely tubular and excavated on the anterior side. On the 
