232 



PYRAMIDELLID.E. 



Genus ODOSTOMIA, Fleming. 



Operculigerous lobe simple. 



Shell turreted, subulate or ovate, smooth or trans- 

 versely striated ; apex of spire sinistral ; aperture ovate, 

 peristome not continuous ; columellar lip with a single 

 tooth-like fold. 



Syn. Turbonilla, h, Loven. 



Ex. O. spiralis, Montagu, pi. 24, fig. 7. Shell, O. 

 unidentata, Monlacju, fig. 7, a. 



This genus consists of small, usually white, smooth, 

 solid, and enamelled shells, with the inner lip always 

 toothed ; they range from low-water to forty fathoms ; the 

 animal is the same as that of Turbonilla. 



Species of Odostomia. 



acuta, Je^r. 

 alba, Jejfr. 

 albella, Loven. 

 canaliculata, C. B. Adams. 

 conoidea, Brocc. 

 conspicua, Alder. 

 crassa, ThomjJ. 

 crassula, H. and A. Adams 

 (solidula, C. B. Adams). 

 decorata, Phil. 

 doliaris, Phil. 

 dolioliformis, Jefr. 

 dubia, JeJfr. 

 erythrsea, Phil. 

 eulimoides, Hanley. 

 fusca, C. B. Adams. 

 gemmulosa, C. B. Adams. 



glabrata, Muhlf. 



nitida, Alder. 



notata, Jeffr. 



ornata, II. and A. Adams 



(decorata, C. B. Adams). 

 oscitans, Loven. 

 ovuloides, C. B. Adams. 

 pallida, Mont. 

 plicata, Mont. 

 rissoides, Hanley. 

 solidula, Phil. 

 striolata. Alder. 

 subulata, Phil. 

 suturalis, Phil. 

 truncatula, Jeffr. 

 turrita, Hanley. 

 unidentata, Mont. 



