STROMBIN^. 



309 



Family 3. STROMBID^. Wing-Shells. 



Outer lip dilated, or thickened internally, or detached 

 from the preceding whorl by a sinus ; operculum small. 



SuBFAM. 1. STROMBIN^. 



Outer lip considerably dilated, but never toothed ; spire 

 rarely longer than the aperture, with a sinus near the 



Aphorrais Da Costa, {fig. 76. a.) Spire longer than 



the aperture ; outer lip dilated into finger- like pro- 

 cesses ; base produced, compressed, with a slender 

 grooved channel in the middle, but no distinct lobe. 

 A. pes-pelicani. Mart. B5. f. 848—850. 



Pteroceras Lam. {fig. 77-) Spire 

 short j outer lip considerably di- 

 lated, ascending and attached to the 

 spire, in general divided into linear 

 processes ; basal lobe inflexed, 

 toothed : channel long. 



