152 Panama /Shells. 



Habitat. Panama ; C. B. A. ! 

 2 specimens were found. 



196. Cerithiuin famelicum. Nov. sp. 



Shell long, ovate conic : dingy white, more or less profusely 

 mottled with irregular brown spots, which are divided by fine 

 white spiral lines ; or nearly covered with fine alternating white 

 and brown lines : with a narrow spiral ridge on the middle of 

 the whorls, crossing transverse obtuse ridges, with very promi- 

 nent acute intersections ; with the upper margin of the whorls 

 more or less granulous; anteriorly with two more granulous 

 spiral ridges ; surface covered with fine spiral striae : apex acute : 

 spire with the outlines slightly curvilinear : whorls twelve, 

 moderately convex, with the suture lightly impressed ; last 

 whorl short, gibbous on the left, with an anterior concave area : 

 aperture large, obliquely elliptical : labrum advanced in the 

 lower half: labium with a moderately thick deposit and a stout 

 transverse plait above : canal short, oblique. 



Mean divergence about 33 ; length 1.13 inch ; breadth .5 

 inch ; length of spire .75 inch. 



In color and sculpture only, this shell has some resemblance 

 to C. maculosum Kr. (C. adustum of Kr.'s plate.) 



Station.' Unknown. 

 Habitat. Taboga ; C. B. A. ! 

 17 specimens were collected. 



197. Cerithium gemmatum. 



/Synonymy. 

 Cerithium gemmatum Hinds Voy. Sulph. Moll. pi. 11. f. 5. 6. 1844. 



Station. Sandy mud, in from 2 or 3 to 7 fathoms or 

 upwards; Hinds! 



