354 TURRITELLID^. 



slight canal, the margin sinuated and reflexed ; inner lip 

 somewhat twisted and flattened j outer lip thin, sinuated 

 posteriorly. 



Ex. M. brevialis, Lamarck, pi. 38, fig. 4. Opercu- 

 lum, M. brevialis, fig. 4, a, 4, h. 



This genus, founded on the CerUJiium Mesal of Adan- 

 son, most nearly resembles the fossil Proio of M. De- 

 france, but the fore part of the aperture is not so de- 

 cidedly notched, and the last whorl is rounded ; the 

 outer lip, moreover, is posteriorly sinuated in Mesalia. 



Species of Mesalia. 



brevialis, Lam. melanoides, Reeve. 



decussata, A. Adams. opalina, Adams and Reeve. 



lactea, Moll. striata, A. Adams. 



Genus EGLISIA, Gray. 



Shell elongately turreted, whorls numerous, rounded, 

 with obsolete longitudinal varices, suture depressed ; aper- 

 ture orbicular, small; inner lip flattened, incrassated, 

 angulated at the fore part, not reflexed anteriorly ; outer 

 lip thickened internally. 



Ex. E. spirata, Sowerby, pi. 38, fig. 5. 



The animal of this genus is not known ; the shells 

 somewhat resemble acuminated species of Scala, to which 

 resemblance the rudimentary varices and cancellated 

 whorls contribute ; the species are few in number, and 

 are natives of Japan and the Indian Seas. 



