LITTORINA. Panama Shells. 175 



whorls nearly six, a little convex, with a distinct suture ; last 

 whorl angular : aperture ovate, acute above, slightly effuse : 

 columellar lip slightly flattened and dilated. 



Mean divergence about 55 ; length .25 inch ; breadth .17 

 inch. 



Some of the more strongly striated and colored individuals 

 resemble the young of L. aspera, but the spire is always less 

 acute. 



Station. In the cavities of a rough ledge of rocks, at and 

 above high water mark. 



Habitat. Panama ; B. B. Philippi ! Philippi. 



Taboga ; C. B. A. ! 

 600 specimens were taken at Taboga. 



240. Littorina pulchra. 



Synonymy. 



Littorina pulchra Sowb. Gen. No. 37. f. 2, 3. 1824. 



Griff. An. King. Moll. pi. 1. f. 3. 1834. 



Turbo pulcher Swains. Malac. p. 207. f. 39. 1840. 



Littorina pukhra Reeve Conch. Syst. pi. 222. f. 23. 1842. 



Lam. An. sans Vert. IX. 208. No. 7. 



(Desh.ed.) 1843. 



Lam. An. sans Vert. III. Pt. 2. p. 574. 



No. 7. (Desk ed. tert.) 1844. 



Phil. Abbild. II. pi. 1. f. 1. Aug. 1846. 



Reeve Elem. Concb. pi. 12. f. 60. 1848 ? 



Station. We found this species on mangrove trees, in a very 

 dense thicket, which was growing from a soil of black unctuous 

 mud a little below high water mark. 



Habitat. Unknown ; Deshayes. 



" Panama, West coast of Columbia ;" Philippi. 

 Pacific ; Jay. 

 Panama ; C. B. A. ! 



