Zvuloglcal Svciefij. 



Mancinklla, Link, 1807, /. c. iii. p. 115. 



Spire much shorter than the last whorl j aperture longitudinal, 

 rounded ; inner lip smooth and callous, outer one little or not at all 

 marghiated ; shell without varices, but provided with spines and im- 

 bricate scales ; base short, or scarcely elongated, twisted outwards, 

 slightly notched. ': f:i:::ir; 



Mancinella aculeata {Severn. 967, 968). — hijstrix, Linn. sp. — 

 castanea. Link (Cheran. 9.56-958). — armigera, Chemn. sp. — muta- 

 hilis, Chemn. 951-953. — Bezoar, Chemn. 754, 755. 



This genus, combining some Furpurte with some Pyrula: of La- 

 marck, comes near toRapana a, Schum., and perhaps may be adopted. 



VoLEMA, Link, 1807, I. c. iii. p. 115. (Folema, Bolt, emend.) 



Spire much shorter than the last whorl, often distorted ; aperture 

 ohlong, rounded ; inner lip smooth and callous, outer lip simple ; shell 

 without varices ; if grown old, with spines or imbricated scales ; base 

 elongated, rather turned aside. 



The species are to be found in my ' Ind. Gen. Malacoz.' vol. ii. 

 p. 699. 



This genus unites Busy cum. Bolt. (=:FtiJffur, Montf.) with Cassi- 

 dulus, Humphr., Gray. 



Xancus, Bolten, 1798, Mus. (edit. 1819, p. 94) ; Link, 1807, /. e. 



iii. p. 116. 

 Spire shorter than the last whorl ; aperture above rounded, wide, 

 below narrow ; inner lip callous, with three folds ; outer lip simple ; 

 shell heavy, without varices or spines ; base elongated. 

 ' ' Xancus pyrum, Linn, sp., and macalatus, Link (Chemn. f. 9 1 7, 9 1 8) . 

 This genus, by Humphrey called Rapum, by Fabvicius Pyrum, by 

 Dr. Gray Turbinellus, and by IM. Deshayes Scolymus, is here cha- 

 racterized for the first time, and sufficiently, 



Cymatium, Link, 1807, I- c. iii. p. 119. 



Spire rather long ; aperture above rounded ; inner lip callous, with 

 three folds ; outer one marginated ; a great number of crowded and 

 ridged varices run down the shell, to which they are firmly grown ; 

 base little elongated. "" 



Cymatium polygonum, &c. 



This is quite identical with Latirus, Montf., or Pohjgona, Schum. 



Vasum, Link, 1807, I. c. iii. p. 119. (Fasutn, Bolt, emend.) 



Spire rather long ; aperture longitudinal ; inner lip calloxis, with 

 alternately larger folds ; outer lip simple ; shell without distinct va- 

 rices ; base elongated. 



Vasum Ceramicum, Linn, sp., &c. 



This is Cynodonta, Schum., Scolymus, Sw. 



TuDiCLA, Link, 1807, I. c. iii. p. 120. (Tudicla, Bolt, emend.) 

 Spire very short, depressed ; aperture above semicircular ; inner 



lip callous, with a single fold ; outer one simple ; no varices or spines ; 



canal straight, thin. 



