89 



VIII. Ili|iloiiiiiiatiiia Bensoii. 



Conf. Bens 071 in Ann. mid Mair. 2d. ser. X et XI. 

 passim. 



214. Megalomastoma cylindraceum Chemn. 



Synon. Cerion truncatum Bolt. Mus. p. 90. n. 1171. 

 Ed. sec. ]). 64. 



227 a. Megalomastoma Anostoma Benson. -f 



„T. perforata, tumta, tenui, exiliter striata, pallidc 

 castanea, apice acutiuscula albida; anfr. 7 convexis, ultimo 

 antice breviter ascendente , basi rotundato ; apertura ampla, 

 vix obliqua, leviter sursum spectante, subcirculari , fauce 

 castanea, margine rufo; perist. duplicato, tenui, interno 

 continuo, subito expanso, externo plane dilatato, praecipuc 

 ad partem columellarem , vix reflexiusculo. — Axis 23, 

 diam. anfr. penult. 10, diam. apert. extern. 9, alt. apert. 

 71/2 mill." (B.) 



Cyclostoma Anostoma Bens, in Ann. and Mag. 2d. 

 ser. X. Oct. 1852. 



Habitat in insula Borneo , Labuan (Traill). 

 286 a. Cataulus Austenianus Benson. 



„T. subperforata, ovato - pyramidata , solidiuscula , ele- 

 ganter oblique costulato-striata, sericea, diaphana, saturate 

 rubro - castanea , spira turrita, sutura impressa, apice acu- 

 tiusculo; anfr. 8 convexiusculis, ultimo antice subascendente, 

 carina basali, compressa, prominente, subfuniculata , antice 

 non dilatata; apertura subcirculari, obliqua, sursum spec- 

 tante, perist. duplici, incrassato, saturate fusco-aurantiaco, 

 interno continuo, breviter adnato, externo fornicatim pa- 

 tente reflexo, superne et ad columellam subauriciüato-dila- 

 tato, canali basali aperto, intus vix strictiore, ad sinistram 

 perforato; operc. spiralitcr laminato, anfractus multos ap- 

 pressos reconditos exhibente, facie exteriori anfractus plures 

 angustos mentiente. - Diam. 131/2. «lt. 25 mill." (B.) 



Cataulus Austenianus Bens, in Ann. and Mag. 2d. 

 ser. XII. p. 95. 



