TURBO. 361 
Witchell (‘ Geology of Stroud,’ p. 51) as a fossil of the Oolite-Marl under the same 
name. It belongs to the same group, no doubt, and has another relative in Turbo 
segregatus, H. and D. (‘ Foss. Mont.-Bellay,’ p. 57, pl. ii, fig. 10). N.B.— 
Hitherto I have always quoted D. funata as a fossil of the Inferior Oolite in the 
Cotteswolds on the authority of Lycett and Witchell, but it seems that Turbo or 
Delphinula Davoustii is more suitable. 
Description : 
Height 2 : : : . 13 mm. 
Width ‘ ; : : . 14mm. 
Spiral angle. uo 
The description given by dorky, 1s paicantls near to permit of an 
approximate identification, although there are some differences of detail. 
T. Davoustii may be regarded as a wide-angled and spinulose relative of 
T. Hamptonensis. It is especially characterised by tuberculations which have 
semilunar pits of varying depth on the anterior side (a feature also of D. funata, 
Goldf., and of Turbo | Delphinula] funiculatus, Phil.). The character of the base and 
aperture is also the same, except that the tuberculations are far more vigorous. 
The best specimens are from Bradford Abbas, presumably from the higher 
zones ; it is also found at Horton Hill in the Parkinsoni-zone, but the specimens 
are inferior. There are also, in all probability, inferior specimens on other horizons 
and in other localities of the Cotteswolds. 
Variety Lindonensis (fig. 6). 
Description : 
Height : : : : = Ji mm: 
Width ; 3 : : . 13 mm. 
Spiral angle . ‘ 2 o0n 
Shell turbinate, moderately ceabiceated: The spire is convex and irregular, 
with a gaping suture, especially pronounced in the last whorl. Apex obtuse; 
number of whorls about four, angular and subtabulate, the whole shell being 
conspicuously muricated ; penult ornamented by three or four rows of spinous 
tubercles. 
The body-whorl is somewhat bicarinate, and has on the flank three rows of 
very spinous tubercles, hollowed anteriorly ; the middle row, which is situate at 
the posterior angle, carries the largest spines. Base rounded, and ornamented with 
four or five rows of smaller tubercles. Umbilicus and aperture as in 7. Davoustii. 
Of all the members of the group known to occur in the Inferior Oolite, the 
var. Lindonensis has perhaps the most considerable resemblance to the Corallian 
