VEXILLA. 



309 



genus, including some bivalves of splendour and beauty, justify- 

 ing the name given to it, may be known from Cytherea by the 

 absence of a lateral tooth, which is found near the cardinal 

 teeth in the latter. Artemis is distinguished not only by its 

 beautiful form, but by the deep angular sinus in the palleal 

 impression. Found mostly in temperate and tropical climates. 

 A monograph will appear in No. 13. of Thesaurus Conchy liorum 

 by the Author. PL vi. fig. 119. 119«. 



VEEMETFS. Adanson. Fam. Scalariana, Lam. Cricosto- 

 mata, Bl. — Bescr. Spiral at the apex, irregularly twisted 

 towards the aperture; aperture round, smaU. — Obs. This 

 shell resembles the Serpulse in general appearance, although it 

 is regularly spiral near the apex. The animal is known to be a 

 true mollusc, rather nearly allied to that of the genus Dentalium, 

 which is also placed wrongly in the Lamarckian system. Ver- 

 metus Lumbricalis. Coast of Africa. PI. xv. fig. 345. 



VEEMICULAE. {Vermicularis.) "Worm-shaped, tubular ser- 

 pentine. Ex. Vermilia triquetra, fig. 7. 



VEEMICULAEIA. Lam. Vekmettjs, Adanson ; afterwards 

 Veemetus, Lam. 



VERMILIA. Lam. A genus composed of species of Serpula, 

 which are attached by the whole length of the shell, no part 

 being free. Yermilia triquetra. PL i. fig. 7. 



YEETEBEALINA. D'Orb. A genus of Microscopic Eorami- 

 nifera. 



VEETEX. Apex. 



VEETIGO. MiiU. Fam. Cohmacea, Jjmx.—Descr. Cylindri- 

 cally fusiform, sinistral, hyaline ; aperture marginated, sinuated, 

 denticulated on the inner edge ; peristome sub-reflected. — 

 Obs. This genus of minute land shells, resembles Pupa, but is 

 a reversed, hyaline sheU. Vertigo pusilla. PL xiv. fig. 293. 



VEEEUCA. Schum. Clitia, Leach. 



VESICA. Sw. A sub-genus of Bulinus, Sw. p. 360. 



VEXILLA. Sw. A genus of " Nassinse," Sw. thus described: 

 " General shape oi Purpura, the inner lip flattened and depressed; 

 the outer, when adult, thickened, inflected and toothed ; aper- 



