MCINULA. Panama Shells. 101 



106. Coluinbella I . 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. Ricinnla carbonaria ! 



Si/nonymy. 

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



Station. — Under stones at low water mark. 



Habitat. — Unknown ; Reeve. 

 Philippines ; Jay. 

 Panama ; G. Jewett 1 Gould MSS. 

 Taboga and Panama ; 0. B. A. ! 

 K 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. Ricinula jug^osa. 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. 



JULY, 1852. 26 Amn. Ltc. Nat. Hist. 



