386 CRETACEOUS GASTROPODA 
2. PLEUROTOMARIA GLABELLA, Stoliczka, Pl. XXV, Figs. 8 and 9. 
Pleu. testa conica; anfractibus applanatis, sublevigatis, postice striis tribus spt- 
ralibus notatis, striis incrementi tenuibus, fascia lata, convexim prominente ; ultimo 
anfractu ad peripheriam angulato ; basi subplana, spiraliter striata, im medio im- 
pressa, haud umbilicata ; apertura quadrangulari, obliqua. 
Spiral angle 58°; sutural angle 7°. 
Height of shell : diameter of its basis (considered as 1:00) ae aco. AO), 
» of one whorl : its width a 3 oe ape) Bet soo. UBB 
This species rather represents a jurassic type of Plewrotomaria, having a 
regular conical form, almost smooth surface, and a very broad band, situated 
below the middle of each whorl. The whorls are posteriorly somewhat concave 
and marked with three subobsolete spiral strie, the strize of growth being on 
the entire surface fine, but distinctly traceable. The basis is rather flat, and also 
spirally striated ; columella solid ; aperture subquadrangular, oblique, rather sharply 
angular at the periphery of the base; the slit of the outer lip appears to be very 
short. Casts of the shell have the whorls more or less rounded, but their posterior 
flattening is always traceable. 
Locality.—S. of Puravoy, in brownish calcareous sandstone ; apparently rare. 
Formation.—Ootatoor group. 
XCVI. LEPTOMARIA, Deslongchamps, 1865. 
1. Lepromaria inpica, Forbes, sp., Pl. XXVI, Figs. 1—4. 
Lept. testa conica, spira elevata atque sub-acuminata ; anfractibus numerosis, 
prope medium plus minusve distincte angulatis, aliquantisper subconvexis, spiraliter 
sulcato-striatis : striis numerosis, fortioribus et tenwioribus sepius alternantibus, striis 
incrementi decussantibus, supra sinuose obliquis, infra prope rectis; fascia angus- 
tissima, ad angulum medianum sita; ultimo anfractu ad peripheriam angulato, acute 
seu obtuse carinato; basi subconvexa, in medio funiculate impressa et umbilicata, in 
adultis speciminibus prope medium et ad peripheriam spiraliter sulcato-striata ; 
apertura quadrangulart. 
Spiral angle 70°- 105° ; sutural angle 5°- 8°. 
Height of shell : diameter of its basis (considered as 1:00) .. 0°85—1-00. 
» 3, one whorl : its width (Goes D) .. 0'52—0°40. 
Height of shell of largest specimen gon mms 
Diameter of basis of ditto Ais .. 113 mm. 
The form of the whorls of this species is extremely variable, as is indicated 
by the great differences in the spiral angle. Well preserved shells always have 
the whorls angular near the middle, where the very narrow band is situated, but 
this angular shape is generally much stronger in specimens with a depressed 
spire than in those with a more elevated spire. The portion of the whorls above 
the band is flat or slightly convex, the lower one straight ; only when the surface 
of the shell is worn off do they present a continuous convex outline. In such 
