20f 



!. PARVULA, Philippi. 



Another unfigured species ; locality unknown; said to belong 

 to the group containing G. fimbriata, Gmel. 



C. CASTANEA, Anderson. 



Shell ovate, ventricose, chestnut-brown, with two wide obscure 

 bands, margins thickened, white spotted with brown, aperture 

 at extremities rosy red. 



Hab.? 



C. TRTGONELLA, Dufl*. 



Shell oval, a little inflated, aperture narrow, dorsal surface 

 crimson-reddish, margin white, spotted with blackish brown. 



New Holland. 

 TRIVIA ACUTIDENTATA, Gask. 



Ovate globular, dull white with a faint dorsal impression, ribs 

 rather thick, prominent but not crowded, columellar side more 

 gibbous than the outer, teeth more numerous on the lip than on 



the columella. 



Bay of Guayaquil. 



Its nearest ally in shape is T. exigua. l 



The original type of this species was accidentally broken by 

 Mr. Gaskoin after description, and the fragments preserved in 

 the collection of Miss Saul are too incomplete for recognition. 



