648 APPENDIX. 



he has suggested a genus under the above name for Geomelania 

 sinuosa, Chitty, which may be thus described : 



Shell imperforate, couic, cylindrical ; aperture ovate, moderately 

 effuse, peristome thickened, sharply reflected, not produced, 

 with a sinus on the inner side near the axis. 



Ex. C. sinuosa, Chitty, pi. 138, fig. 14. 



CONCHIFERA. 



Vol. ii. p. 331. Genus TEREDO. 



"We have hitherto considered Kuphus (not Cuphus) of Guettard 

 to be synonymous with Teredo, but Dr. Gray, who has recently 

 had an opportunity of examining a perfect specimen of the former, 

 has ascertained the singular fact that it is entirely without the 

 shelly valves present in Teredo and the other members of the 

 family. The genus Kuphus will therefore stand as follows. 



Genus KUPHUS, Guettard. 



Animal without any true shelly valves. Siphon al pallettes 

 distinct, large ; apex dilated, transverse, spathulate, with a 

 central midrib, and an elongated, slender, cylindrical base. 



Tube clavate, irregular, sometimes bent ; apex with two tubu- 

 lar siphoual apertures separated by a broad, hard, shelly, longi- 

 tudinal dissepiment ; base pierced with small scattered perfo- 

 rations ; end enclosed by two overlapping convex septa, arising 

 from the sides and completely closing the ends. (Gray.) 



Syn. Septaria, Lam. Cloisonnaria, Ferus. Clausaria, Menke. 

 Furcella, Oken. Kyphus, Agass. 



Ex. K. giganteus, Linnmis. 



