Ralph Tate — New Liassie Fossils. 205 



Tkochus tiakelltjs, spec. nov. 



Shell conical, of five and a half whorls, separated by a deep 

 suture ; apical whorls fiat, anterior ones slightly concave, orna- 

 mented with oblique costae, and longitudinal striae. Last whorl 

 carinated ; the transverse ribs are subnodulose at the suture, have 

 a backward direction, and vanish before reaching the keel, but which 

 are continued on to the base of the shell as oblique stria?. Base 

 convex, concentrically striated, imperforate, aperture ovate, columella 

 twisted. 



Height ^ inch, breadth -*■ inch, height of last whorl -| inch. 



Zone of Ammonites sjpinatus, King's Sutton (1 example). 



Cekithium confustjm, spec. nov. 



Shell elongate-conical, whorls (15) depressed, suture channelled ; 

 ornamented with ten longitudinal costae, and transverse granulated 

 striae. The five posterior costas are granulated, the granulations are 

 arranged in an oblique series, and continued as stria? with a forward 

 direction on the remainder of the breadth of the whorl ; the two 

 anterior costas are also granulated, especially the one next the suture. 

 Base oblique, with about four granulated encircling folds. Length 

 1^ inch, breadth J inch. 



Zone of Ammonites spinatus, near Banbury (3 specimens). 



C. confusum has some resemblance to C. Moorei, Tate, = C. pyra- 

 midale, Moore, M. and U. Lias, S. W. England, t. 4, f. 8. 1867, non 

 C. pyramidale, Sow., id., D'Orbigny, 1854. 



Cerithitjm FERREtrH, spec. nov. 



Shell turriculate-elongated, polished ; whorls (12) subconcave, 

 suture linear, last whorl with longitudinal depressed costulas, smaller 

 and more depressed towards the suture ; the posterior whorls are, in 

 addition, ornamented with flexuous ribs, which originate at the pos- 

 terior suture, and fade off at about the middle of the whorl. Base 

 with eight concentric costulas ; aperture oval-oblong; peristome 

 continuous ; canal short, lateral. 



Length 7-10ths inch, breadth 7-40ths inch. It is related to C. 

 quadrilineatiim, Rom., and C. costidatum, Deslong. 



Zone of Ammonites spinatus, King's Sutton (4 examples). 



Spikopoka liassica, spec. nov. 



{Spiropora sp., MM. Deslongchamps, Bull. Soc. Linne, Normaadie, vol. 

 iii. p. 58, 1859. 

 Ceriopora sp., Beesley, loc. cit. , p. 10, 1873. 



Fig. 1. — Spiropora Liassica, Tate, nat. size. — la. Six of the cellules magnified. 



