252 
GASTEROPODA OE THE INFERIOR OOLITE. 
Shell subelongate, ovate, turrited. Number of whorls in the larger and more 
typical form six to seven ; the width equals the height plus the height of the two 
preceding whorls ; whorls very convex, smooth and slightly flattened at the 
shoulders. Body-whorl about three-fifths of the entire length, ventricose, base 
rounded. Aperture ovate (length to width as : 1 nearly), and almost equally 
rounded at either extremity. 
Varieties. — The small form (fig. 10 h) seems to represent this species in the 
Bradford Abbas beds. It is somewhat wider-angled, and the body- whorl more 
ventricose, and in most specimens the whorls are rather more flattened at the 
shoulder than is usual with “ Phasianellse.^’ The aperture is perfectly oval 
and some specimens show a considerable umbilical fissure. 
Another micromorph (fig. 14 b) occasionally met with in the Dorsetshire Beds, 
combines so many characters that it seems to be related to more than one named 
form. It is rather more ventricose in the body- whorl than Ph. elegans, but 
approaches that species. 
Relations and Distribution. — Ph. latiuscula may be taken to represent a sort of 
average form of the Jurassic “ Phasianellae,'” characterised by a body-whorl more 
ventricose than in Ph. elegans, less so than in Ph. tumidida. 
It is fairly abundant in the upper beds of the Lincolnshire Limestone, especially 
at Weldon, but would seem to be rare in the Scarborough Limestone. 
188. “Phasianella ” elegans, Morris and Lycett, 1851. Plate XIX, figs. 11 a, 11 b, 
and fig. 12. 
1851. PhasiaxeI/LA elegans, Morris and Lycett. Great Ool. Moll., p. 74, pi. xi, 
fig. 27. 
Description of the Lincolnshire Limestone variety : 
Spiral angle .... 40° — 44°. 
Height of body-whorl to entire shell . . 52 : 100. 
Length about . . . .25 mm. 
Shell conical, ovate, turrited. Number of whorls from eight to nine in full- 
grown specimens, often fewer ; these are smooth, convex, and moderately short. I 
Body- whorl scarcely longer than the spire, but slightly ventricose ; base rounded, j 
Aperture as in the preceding. i 
Relations and Distribution. — Differs from Ph. latiuscula in having a narrower j 
spire, and a body- whorl relatively shorter and less ventricose. Specimens from ' 
the Great Oolite are much larger, but their proportions are nearly the same. | 
Ph. elegans is not quoted by Morris and Lycett (‘ Quart. Journ. Geol. Soc.,’ i 
vol. ix, p. 326) as occurring in the “ Upper Shelly Beds ” at Ponton, but one sees ' 
