West Indian Marine Shells. 397 



Murex rarispina I^am. We think this is the same species as 

 found at St. Croix by Professor A. S. Orsted, and now in the 

 Cabinet of the University of Copenhagen under the name of 

 Murex Antillarum Hinds. 



Natica cancellata Lea, is the more smooth form of N. ritgosa 

 Chem., which we take to be syn. with N. sulcata Born., N. 

 rugosa Gmel., and JST. costata Menke. 



Natica cancellata Lam., is the true A r . rugosa Chem., which 

 consequently would have tive synonymes, if the names in the 

 Amherst Cabinet be correct. 



JVeritina Jamaicensis C. B. Ad., is likely syn. with ]V. clilo- 

 rina Link. 



X, riUna ornata C. B. Ad., is very like i\T. virginea L. 

 Odostomia canaliculata C. B. Ad., and 0. solida C. B. Ad., 

 are very like each other. 



Pleurotoma alhida C. B. Ad., and P. fmiformis C. B. Ad., 

 appear to be synonymes. 



Pleurotoma Augustae C. B. Ad., is P. coccinata Rv. 

 Pleurotoma minor C. B. Ad., is very like a Columhdla. 

 Pleurotoma monilifera C. B. Ad., and P. pygmaea C. B. Ad., 

 both from Jamaica, are Columoella Broderijni Sowb. 

 There are twenty without names. 

 Ricinula nodulosa C. B. Ad., is R '. ferruginosa Kv. 

 Rissoa crassicosta C. B. Ad., one poor specimen from Ja- 

 maica, very like a Scalaria crenata L., is certainly not a Rissoa, 

 but being placed next to the Scalariae a mistake may have 

 arisen. 



Rissoa minor C. B. Ad., R. rmdticostata C. B. Ad., R. sca- 

 larella C. B. Ad., and R. scalaroides C. B. Ad., are syn. with 

 Rissoina Catesbya d'Orb. 



Rissoa tervaricosa C. B. Ad., is syn. with R. mclanura C. B. 

 Ad., and Eulima incerta d'Orb. 



mentions having detected, among the Bahamas shells in the cabinet of Governor 

 Eawson, two not very good specimens supposed to be of " the very rare Murex 

 spectrum" — T. B. 



