334 MOLLUSCA. SOLENOSTOMATA- Cancii.lakia. 



2. M. scdbra — Ovato-fusiform, rough, with decussating striae; lip thicken, 

 ed with one obtuse tooth upon its margin — This probably belongs to the 

 genus Collumbella — (Buccinum scabriusculum, Brander, f. 20.) Sower. Min. 

 Conch, t. cccci London Clay. 



3. M. parva. — Ovate, fusiform, short, transversely sulcated ; upper edges 

 of the whorls defined, entire ; aperture elongated, Up plaited within ; four 

 folds on the pillar.— 5'ower. Min. Conch, t. ccccxxx. f. 1. — London Clay. 



4. M. pumila — Ovate, fusiform, short, transversely sulcated ; upper edges 

 oi the whorls defined, crenated; sulci decussated by longitudinal costse; aper- 

 ture elongated ; lip, plaited within ; four folds on the pillar.— SottJer. Min. 

 Conch, t. ccccxxx. f. 2. 



Gen. LXVII. CANCELLARIA.— Last whorl subventri- 

 cose ; aperture ovate, ending in a short canal ; pillar plait- 

 ed. 



299. C. hyalina. — Whorls six, smooth, folds of the piUai' nu- 

 merous. 



Voluta hyalina, Mont. Test. Brit. Sup. 101. t. xxx. f. 1 — Found at 

 Dunbar by Mr Laskey. 

 Length a quarter of an inch, breadth nearly two-thirds less; pellucid, 

 white ; whorls flat, scarcely defined by the separating line, tapering to an ob- 

 tuse point ; body-whorl more than half the length of the shell ; aperture con- 

 tracted retrally ; outer lip nearly straight, smooth ; folds of the pillar fine 

 thread-like striae, originating from behind the piUar-lip. 



EXTINCT SPECIES. 



1. C. quadrata. — Ovate elongated, cancellated, without either varices or 

 beak ; two obtuse plaits on the pillar, besides the spiral edge ; outer lip sharp, 

 entire, striated withm Soiver. Min Conch, t. ccclx. — London Clay. 



2. C. IcBviuscula. — Short, ovate, pointed, furnished with varicose sutures 

 and costae, crossed by numerous obtuse elevated lines ; pillar biplicated ; aper- 

 ture scarcely canaliculated.— iSower. Min. Conch, t. ccclxi. f. 1. — London 

 Clay. 



3. C e?m&o.— Short, ovate, pointed, furnished with varicose sutures and 

 costae, crossed by several acute carinae, most elevated upon the costae ; pillar 

 biplicated ; aperture scarcely canaliculated — (Buccinum evulsum, Brander, 

 f. 14.) Sower. Min. Conch, t. ccclxi. f. 2, 3, 4, — Landmi Clay. 



The two last species evidently belong to the group mdicated by Brander. 



