V, iie ftri(e however that form the cancelli are 



?Rr .^-HViiig the deprcnions much fmaller ; the Ihape 



r"" %eil is ahb more flender, and may rcdily b? known 

 1 this /tate from Cimex, by having four fci ies of cancelli 

 ;he fecond fpire inftead of two, which that fhell invaria- 

 bly has. 



Voluta Ambigua. Lin. Trans, viii. p. 132. Pallidus* 



We may be permitted to remark in this place that, al- 

 though our Cyprcra Voluta may with as mucii pro'[)r'ety be 

 placed in the genus Voluta, as in that it now ftands in Te/ia- 

 cea Britannica, yet we cannot aflent to the removal of our 

 Turbo pallidus, no more than oi fpiralis, u?2?de?itaius , vi- 

 terJlinSlus, and plicatus, into the Ltnn^an genus Voluta. 

 There is nothing in the conftruflion of thefe fliells that can 

 bear out the chzr3.6\er of aperturajubeffiifa, columella plicata. 

 It is true there is a ridffe or Ic;;2rthened denticle on the colu- 

 mella of thefe fpecies, but by rio neans fufficient tocoriftitute 

 the generally accepted terms applied as the leading characflers 

 of a Voluta. 



How can we apply fub-orbicular, or fub-oval aperture to 

 fuheffufa, even though it was admitted that a fmall denticle 

 might be confidered a plication on the columella ? — for furely 

 the characters muit be taken conjointly. If indeed a denti- 

 cular, or as fome may term it, plicated columella, withcu( re- 

 gard to other chara6lers is fufficient lo conftitute a Voluta, 



why 



p. 325. 



