GASTEROPODA. 71 
Locality. This little species is very rare. It occurs in the planking of Minchinhampton 
Common. 
The specimen figured in the ‘ Min. Con.’ is from the Oolite of Ancliff, Wiltshire ; 
M. Buvignier describes his species as occurring in the Coral Rag of St. Mihiel, France. 
De.pHintLa Buckmannti. Plate V, fig. 8. 
D. Testé turbinatd, spird elatd, anfractibus (3—A4) costatis ; ultimo anfractu ventricoso, 
subquadrato, in medio costato ; costis longitudinalibus, numerosis, rectis, et rotundatis, superne 
acutis, striis transversis impressis ; umbilico contracto, striis tenuissimis cincto. 
Shell turbinated, spire elevated, whorls (3—4) costated, the last whorl ventricose, 
subquadrate, costated in its middle portion ; the costz are longitudinal, numerous, perpen- 
dicular, acute at their upper extremities, and impressed with transverse strize ; the umbilicus 
is contracted, and encircled with very fine striz. 
The costa are scarcely visible upon the upper surface of the last whorl, and nearly 
disappear towards its base ; the aperture is suborbicular, the lips bemg less incrassated than 
is sometimes seen in this genus. Individual specimens vary very much in the elevation of 
the spire, and in the degree of squareness or angularity which the last whorl acquires ; in 
some the umbilicus is scarcely visible, which usually happens in the more elevated shells. 
Locality. This shell occurs in the beds of coarse planking on Minchinhampton 
Common ; but well-preserved examples are rare. 
DeELPHINULA ALTA. Plate IX, fig. 31. 
D. Testé turbinatd; spird elatd, obtusd; anfractibus angulatis (interne rotundatis) ; 
anfractu ultimo tuberculis acutis, crebris sed distinctis ornato ; basi quadricinetd, costulis 
tuberculatis ; umbilico magno profundo ; apertura subquadratd. 
Shell turbinated ; spire elevated, obtuse ; whorls angular (the moulds of the interior 
being convex) ; the last whorl has, surrounding its upper part, a circle of elevated, acute, 
distinct, and closely-arranged tubercles; the base is encircled with four elevated ribs, 
which are closely tuberculated ; the upper or flatter part of the last whorl has several fine 
encircling lines (often indistinct) ; the umbilicus is large and deep, the aperture subquadrate 
and rather small. 
Locality. Minchinhampton. This pretty shell occurs in the planking, and is not 
uncommon ; but the coarseness of the deposit is unfavorable to the preservation of its 
more delicate features. Our best specimens may therefore be regarded as some of the 
choicer productions of the formation. 
