110 J. Starkie Gardner — Cretaceous Gasteropoda. 



few, coarse, unevenly distributed and crossing the ribs, most pro- 

 nounced near the sutures ; last whorl keeled, possessing a compara- 

 tively smooth umbilical area, marked only by six or seven faint striae 

 and still less visible lines of growth ; mouth obliquely ovate, rather 

 angulated, lips not visible in any specimen yet met with, probably 

 thin. 



This unique shell was found by Mr. Meyer at the base of the 

 Folkestone beds, Shanklin. 



So. KAiospiRA, J. S. G. Lower Greensand. Plate III. Fig. 17. 



Shell very elongated, angle about 12°; whorls numerous, elevated, 

 inflated; ribs ten, irregular, coarse and prominent, less distinct near 

 the sutures ; intervals ill-defined ; strias few and coarse, not more 

 than seven ; last whorl resembling that of S'c. ceritliioides just 

 described. 



The ornamentation of this and the preceding specimen is strikingly 

 similar, and it is possible that the discovery of a greater number and 

 more perfect specimens may link them together. The spiral angle 

 and elevation of the whorls at present serve to distinguish them. 

 Both species bear a superficial resemblance to some of the Tertiary 

 Cerithia. 



The following species are cancellated and may be classed in 

 Seeley's sub-genus 



Funis. 



The genus Funis was based by Seeley upon a not uncommon 

 turreted shell, from the Gault of Cambridge, with elongated and 

 cancellated whorls, and was thus described by him in the Annals and 

 Mag. of Nat. Hist., 3rd series, April, 1861, vol. vii. pi. 11, p. 285 : 



"Shell thin, spiral, many-whorled, elongated. Columella straight, 

 scarcely thicker than the shell of the whorls. Edge of the columella 

 inflected and sharp ; base truncated as in Achatina. Mouth ovate 

 [shell cancellated?]. Columellar lip reflected." To this description 

 may be added : — lips thin, without trace of thickened peristome ; 

 whorls inflated ; ornamented with transverse laminar ribbings and 

 with spiral striae producing a cancellated surface ; no basal keel to 

 last whorl. 



There are a number of Tertiary and recent cancellated Scalidce, 

 but all possessing the broadened peristome. Several genera have 

 been created to receive them. 



The only generic characters on which Funis can now be recognized 

 as a distinct genus are the thin shell, inflated whorls, cancellated 

 surface, coruhined with thin lips ; but the admission of the latter 

 character as of generic value would render it necessary to create 

 new genera to receiven early the whole of the Cretaceous Scalidcs, a 

 step that we are hardly prepared to take, and the advisability of 

 which would be open, in the present state of our knowledge, to 

 much doubt. As more Cretaceous forms, however, come to light, I 

 have no hesitation in saying that Funis will prove a useful generic 

 name, and should therefore be retained. 



