RANELLA. 31 



Banelln, 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 nodvdous at the angles ; aperture with posterior channel. 

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

 wanting. 



( Ti/pieal.) 



(it'iuis RANELLA, Laui. 



K. si'iNosA, Lam. PI. 18, hg. 1 



Light In'own. obsoletely banded or mottled with a darker 

 shade. Lengtii, 2 to 3 inches. 



Bed Sea. Indian Ocean, Philippines, Mauritius. 



R. FOLiATA, Brod. PI. 18, tig. 2. 



Light 3'ellowisli )»rovvn, both margins of tlie aperture deep 

 orange. Length, 2*25 to 3 inches. 



Mauritius. 



Very closely allied to li, cramena^ — with which it has been 

 confounded : the only ditferences 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 B. 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, Deshaycs, 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 l)rown bands. There is a singular depression upon 

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



Indian Ocean. 



