RICINULA. Panama Shells. 101 



106. Colllllftbella !- -. Sp. indet. 



We obtained, under stones, at low water mark, on the reef 

 at Panama, two specimens of a species, which appears like a 

 small Conus, but it has stout ribs transverse to the direction. 

 It may be a young Columbella, but it is not the young of any 

 shell known to us. 



107. Ricimila carbonaria 1 



Synonymy. 

 Ricinula carbonaria Reeve Conch. Icon. pi. 4. f. 22. ? Oct. 1846. 



Station. Under stones at low water mark. 



Habitat. Unknown ; Eeeve. 

 Philippines ; Jay. 

 Panama ; OK Jewett ! Gould MSS. 

 Taboga and Panama ; C. B. A. ! 



If Dr. Jay's shell is the same as ours, there must be an error 

 in his statement of habitat. We collected 70 specimens, mostly 

 at Taboga and partly at Panama. 



108. Ricimila jugosa. Nov. sp. 



Shell with a rhomboidal outline : mostly dark brown ; tuber- 

 cles mostly white ; with a white fascia next below the peri- 

 phery of the last whorl ; with some of the tubercles partly 

 rufous : with eight or nine very prominent transverse ridges, 

 which are crossed by ten or eleven spiral ridges, of which three 

 or four appear on the spire ; with the intersections sharply tuber- 

 culous ; with fine spiral striae : apex acute : spire conic : 

 whorls eight or nine, convex, with a moderately impressed 

 suture : aperture rather long : labrum rather sharp, strength- 

 ened by the last ridge, which is very long, scalloped by the 

 spiral ridges, with corresponding plaits within : inner lip exca- 

 vated above, with a few wrinkles above and granules below ; 

 canal moderately long. This species is much like a Murex. 



