BY THE REV. J. E. TENISON-WOODS. 5 



broad, thickened, and almost varicose, the teeth being rather 

 distant. 



This fossil is in its general form extremely like T. avellanoides, 

 McCoy, bnt it is so very small and stouter in proportion to its 

 size. It not a 3 r oimg shell, for not only is it always found of the 

 same size, but the young of this genus present an entirely 

 different aspect, The costa are much stronger in proportion to 

 the size, they are fewer, the vacant dorsal space is not nearly so 

 clearly defined, the labrum is thick, with fewer teeth, and it does 

 not overlap as in T. avellanoides. 



CEmTHiror eusmilia. PI. 1, fig. 9. 

 Testa pwrva, anguste pyramidata, turrita, nitente ; anfr. 8, ? 

 fdecoll.J infra carinatis, 11-14 costis condnnis, infra sulcatis, 

 insignitis; costis angustis, rotundatis, exacte clef nit is ; interstitiis 

 striatis, peripheria angulata, sutura funiculo insignita ; apertwa 

 rotundata, lahro tenui, canali brevissinw, hasi planata, radiatim crebre, 

 conspicae, striata. 



This small Cerithium was never found in a perfect state. It is a 

 Turbonilla, but for the mouth. The distant raised ribs render it 

 easy of recognition, for they are not divided into granules, and 

 at the lower part of each one there is a distinct angular notch, 

 which extends into the interstices. The periphery is angular, 

 base flat and radiately striate, the suture with a narrow spiral 

 thread, and the canal very short and recurved. 



Cerithium salteriana. PI. 1, fig. 11. 



Testa mimita, tumide turrita, a/pice iirdato ; anfr. 11, planatis, 

 oblique crebre costatis, costis regulariter granosis ; granis superne 

 major ibus; apertura qtcadrata, canali spiral iter curvato, columella 

 unipUcata, lahro tenui, nucleo trochiformi, 2h anfr. tumido, costato. 

 Alt. 4£, lat. vix 1, mill. 



This peculiar fossil is mainly distinguished from the very 

 numerous members of this genus, (containing many hundred 

 species, recent and fossil), by its small size, tumid apex and 



