LITTORINA. Panama Shells. 173 



236. Littorina fasciata. 



Synonymy. 



Littorina fasciata Gray in Zool. Beech. Voy. p. 139. 1839. 



Siebold in Wiegm. Archiv. p. 209. 1839. 



- Phil. Abbild. II. p. 37. pi. 5. f. 1, 2. Apr. 1847. 



Station. This species was found, with. L. varia, Sowb., on 

 the trunks and branches of small trees, which were growing 

 between half tide and high water levels. 



o 



Habitat. Pacific Ocean ? Gray. 



Tumbez, Peru ; Cuming ! Philippi. 



Panama ; C. B. A. ! 

 160 specimens were collected. 



237. Littorina (?) ibveata. Nov. sp. 



Shell globose conic : dingjr white, with a very broad dark 

 brown spiral stripe occupying the middle of the last and more 

 or less of the upper whorls : with several inequidistant spiral 

 raised lines : apex subacute : spire with the outlines moderately 

 curvilinear: whorls nearly four, subangular, with a distinct 

 suture ; last whorl angular below the middle : aperture sub- 

 ovate : labrum very sharp, but much thickened a little behind 

 the edge : columella dilated and thickened : region around the 

 umbilicus much excavated, and forming with the umbilicus a 

 funnel-shaped pit. 



Mean divergence about 80; length .19 inch; breadth .15 

 inch; length of spire .08 inch. 



The generic character of this species is doubtful. It may pos- 

 sibly be a NARICA. 



Station. Unknown. 



Habitat. Panama ; C. B. A. ! 



2 specimens were found in the sand. 



