RANELLA. 37 



Ranella, I could detect no points of difference, even with mag- 

 nifying powers ; the conclusion, therefore, is irresistable,that the 

 one is but the young state of the other." 



Subgenera. 

 LAMPAS, Schum. Shell turreted ; whorls nodose ; aperture with posterior 



channel ; canal very short and recurved. 



ASPA, H. and A. Adams. Shell ovate, ventricose, smooth ; spire very 

 short ; whorls nodulous at the angles ; aperture with posterior channel. 

 ARGOBUCCINUM, Klein. Spire elevated ; canal short ; posterior channel 

 wanting. 



( Typical.) 



(ionu.s RANELLA, Lam. 



R. SPINOSA, Lam. PI. 18, fig. 1 



Light brown, obsoletely banded or mottled with a darker 

 shade. Length, 2 to 3 inches. 



Red Sea, Indian Ocean, Philippines, Mauritius. 

 R, FOLIATA, Brod. PI. 18, fig. 2. 



Light yellowish brown, both margins of the aperture deep 

 orange. Length, 2'25 to 3 inches. 



Mauritius. 



Very closely allied to JR. crumena, with which it has been 

 confounded : the only differences are the color of the margins of 

 the aperture, the greater extension of the superior sinus-foliation, 

 and more distinct wrinkles of the inner lip. It may be only a 

 varietal form of JR. crumena. 



R. CRUMENA, Lam. PI. 18, fig. 3. 



Yellowish brown, with darker bands or spots ; aperture white, 

 lips more or less stained with orange, Length, 2 to 3'5 inches, 



Ceylon, Philippines. 



R. MARGARITULA, Deshayes, PI. 18, fig. 4, 



Light brown, with darker spots on the principal tubercles; 

 ^white with a roseate blush within the aperture, with sometimes 

 close, narrow brown bands, There is a singular depression upon 

 the lower part of the columella. Length, 1'25 to 2 inches, 



Indian Ocean. 



