BULL A. Panama Shells. 215 



Habitat. Panama ; C. B. A. ! 

 2 specimens were found. 



320. Btilla (Cyliclma) Iwticola. Nov. sp. 



Shell subcylindric, wider anteriorly : pale horn color, sub- 

 transparent : with the striro of growth very minute : apex in a 

 deep narrow umbilicus, which is partly covered by the upper 

 part of the labrum : last whorl compressed around the middle : 

 aperture rising higher than the umbilicus, linear above, subor- 

 bicular below : labrum very thin, much advanced along the 

 middle : columella thickened with a callus : anterior umbilical 

 region indented, partly covered with a deposit. 



Length .2 inch ; breadth .095 inch. 



Station. This species was found crawling on liquid mud, 

 near low water mark, at the bottom of a steep sand beach. 



Habitat. Panama ; C. B. A. ! 



28 specimens were collected half a mile east of Panama. 



321. JBidla punctulata. 



Synonymy. 



Bulla, punctata Ad. in Sowb. Thes. Conch, p. 577. No. 53. 



pi. 123. f. 77. 1849. 

 jmnctulata Ad. in Sowb. Thes. Conch. Index. 1849. 



Station. Sandy mud, 10 fathoms ; Cuming ! A. Adams. 



Habitat. Panama ; Cuming ! A. Adams. 



Acapulco ; E. Jewett ! Gould MSS. 



Taboga; C. B. A.! 

 25 specimens were found in various states of preservation. 



322. Blllla - -. Sp. indet. 

 Another species is represented by 1 imperfect specimen. 



