112 NASSlNiE. 



emarginated; columella arcuated, abruptly truncated in 

 front, with a single anterior fold. 



Ex. T. filosa, Adams and Reeve., pi. 12, fig. 2. 



This genus is founded on a singular shell discovered 

 during the voyage of H.M.S. Samarang, and is principally 

 characterised by the abrupt truncature of the columella, 

 and by its anteriorly dilated aperture. The species serving 

 as the type is the Buccinum Jilosmn, Adams and Reeve. 



Species of Truncaria. 



filosa, Adams and Reeve, sulcata, Kien. 



niodesta, Po^vis. trifasciata, A. Adams. 



rugata, Reeve. 



Genus BULLIA, Grav. 



Animal without eyes ; tentacles long and slender. Foot 

 greatly expanded, and bifid behind. 



Shell ovate or turreted ; spire more or less acuminated, 

 sutures enamelled ; inner lip excavated in the middle, 

 callous posteriorly ; aperture oval, moderate. 



S;i/n. Bulliana, Mrs. Gray. 



Ex. B. Iffivigata, Martini., pi. 12, fig. 3. Shell, B. 

 Irevigata, fig. 3, a. 



Bullia has a raised band of enamel round the sutures of 

 the whorls, formed by the hinder part of the inner lip of 

 the shell extending beyond the mouth, as in AnciUa. It 

 has the faculty, according to M. Quoy, of absorbing, through 

 the pores of its foot, a great quantity of water, which it 

 ejects, when disturbed, in various directions ; it is caught 

 by baiting lines with bits of flesh : most of the species are 

 African. 



