GASTEROPODA. 27 
somewhat shorter. It is nearly allied to Bulla? primeva, Deslongchamps, ‘ Mém. Soc. 
Linn. de Normand.’ t. 7., pl. x, figs, 23, 24; the latter is a larger shell, with the spire less 
exposed, and the aperture at the base much less lengthened and less pointed ; it is there- 
fore probably distinct. The elongation of the anterior part of the aperture appears also to 
separate it from Acteonina convoluta, Lyc., ‘ Cotteswold Hills,’ p. 125, the left-hand figure, 
pl. iv. As three specimens of each form of different states of growth have been examined, 
we may rely upon the persistence of this distinctive feature. 
Length 11 lines, opposite diameter 6 lines. 
Geological Position and Locality. The Great Oolite of Kirklington, Oxon., collected by 
Mr. Whiteaves, who has obtained several specimens. 
Acrzonina Luipi, Zwid.,sp. Tab. XXXI, fig. 16.; Tab. XLI, fig. 18, a, 4, ¢. 
CocutitEs Lurp. Lithoph. Brit. Ichnogr., 1699, 417. 
Acrmonina Luipi, Mor. Cat. Brit. Foss., 1854, p. 234. 
Testa subcylindrica, antice mediocriter attenuato, postice truncato, anfractu ultimo 
superne angulato, lateribus planatis, spira depressa, anfractibus (4—5) angustis, apice 
exserto. 
Shell short, subcylindrical, moderately attenuated anteriorly, truncated abruptly poste- 
riorly ; volutions (4—5) depressed, narrow, their upper margins exposed upon the flattened 
posterior surface ; the apex is slightly elevated and obtuse; the last volution has its posterior 
margin angulated and its sides flattened. Casts exhibit the upper margin of the last 
volution somewhat rounded, and also the edges of the other volutions. 
Height one third greater than the transverse diameter. 
Geological Position and Localities. The Forest Marble of Kidlington, Oxon., collected 
by Mr. Whiteaves, and of Cirencester, Gloucestershire, collected by myself, at both of 
which localities it is rare. 
ACTEONINA CANALICULATA, Lyc. Tab. XXXI, figs. 9, 9a, 9 4. 
Testa subcylindrica levigata vel ovata, spira exserta, obtusa, anfractibus (7) angustis, 
subplanis, superne convewis, et canaliculgtis, ultimo anfractu subcylindrico, basi . 9G 
Shell subcylindrical, smooth, or ovate ; spire elevated, obtuse, consisting of 7 narrow yolu- 
tions, which have their sides flattened, their upper borders being rounded and deeply 
channeled ; the last volution is nearly cylindrical, the aperture is not exposed, and the base 
is imperfect. 
The characters of the spire, with its numerous narrow-channeled volutions, without 
angularity, appears to be sufficient to distinguish the species. 
Geological Position and Locality. The Great Oolite of Kirklington, Oxon., obtained 
by Mr. Whiteaves. 
