28 SUPPLEMENT TO GREAT OOLITE MOLLUSCA. 
Actronina ScarsurcEnsis, Lyc. Tab. XXXI, figs. 13, 13 a. 
Testa ovata ventricosa levigata, spira brevi obtusa, anfractibus (4) convewvis, anfractu 
ultimo ad suturam subcanaliculato ; apertura angustata, columella ad basin marginata. 
Shell ovately ventricose, smooth ; spire short, obtuse, consisting of four narrow, convex 
volutions ; the last volution has the sides slightly convex, its upper margin rounded and 
slightly channeled at the suture ; the aperture is narrow, somewhat expanded at the base, 
which is marginated at its junction with the columella. 
A handsome ventricose shell, shorter and more tumid than 4. convoluta, Lyc., which 
appears to approximate more nearly to it than other recognised species, 
Length 14 lines, diameter of the last volution 10 lines, length of the aperture 11 lines. 
The specimen figured is from the fine collection of Mr. Leckenby ; the test, which is thin, is 
partially preserved ; it has a corneous aspect. A single specimen. 
Geological Position and Locality. The Cornbrash of Scarborough. 
ACTEONINA SCALARIS, Lyc. Tab. XLIV, fig. 18. 
Testa parva, subcylindracea, spira brevi, acuta, anfractibus 4, lateribus angustis planatis, 
marginibus acutis, superne tabulatis ; aperturd elongatd, basi elliptico curvato. 
Shell small, subcylindrical; spire short, but elevated and acute, consisting of four 
narrow volutions, which are flattened upon their sides, their upper borders are acute, their 
upper areas are flattened ; the aperture is moderately large and lengthened, its base is 
elliptically curved. 
The length is 3 lines, the opposite diameter but little exceeds 1 line. 
The upper angle of each volution is acute, and even slightly projects outwards, a 
character which is not seen in any other known species with an elevated spire. Possibly 
this is the young condition of a much larger species. 
Geological Position and Locality. he Great Oolite of Kirklington, Oxon., collected 
by Mr. Whiteaves. ~ 
Denvratium enTALoIDES, Des?. Tab. XXXI, figs. 1], 11 a, 11 4. 
DENTALIUM ........6... , Phillips. Geol. York., i, pl. 4, fig. 37. 
— GLABELLUM, Bean. Cornbrash Fossils, Mag. Nat. Hist., 1839, without 
figure or description. 
-— ENTALOIDES, Deslongchamps. 1842. Mem. Soc. Linn., vii, p. 128, tab. vii, 
figs. 36—38. 
_ — D’Orb. Prodrome, i, p. 272, No. 205. 
~— PaRKINSONI, Quenstedt. Handbook, t. 35, fig. 19. 
