174 LITTORINID^E. 



2. Lacuna pallidula. 



Cochlea pallidula, DaCosta, Brit. Conch. 1778 ; fide Jeffreys var. albescens 

 and var. patula, Thorpe, Brit. Mar. Conch. 1844. 



2 England ; ex c. G. Nevill, Esq. 



var. neritoidea, Gould. 



Lacuna neritoidea, Gould, Invert. Mass. 1841, " Chelsea Beach" 



3 Maine [United States] ; coll. Rev. E. R. Beadle. 



var. patula. 

 Lacuna patula, Thorpe, Brit. Mar. Conch. 1844. 



1 Falniouth ; ex " Linnsea." 



3. Lacuna divaricata. 



Trochus divaricatus, Fabricius, Fauna Greenland, 1780 [not Trochus 

 divaricatus of Lin.'] ; Turbo vinctus, Mtg. 1805 ; fide Jeffreys, var. 

 gracilior, Metcalfe. 



4 England; ex c. G. Nevill, Esq. 



2 Prince Edward's Island ; coll. A. Nevill, Esq. 



var. solidula. 



Lacuna divaricata, var. solidula, Lo'ven. 

 1 Greenland ; ex " Linnaea." 



var. quadrifasciata. 



Turbo quadrifasciatus, Montagu, Test. Brit. Sup. 1805. 

 1 Long Island, United States ; coll. Rev. E. R. Beadle. 



var. can alls. 



Turbo canalis, Montagu, Test. Brit. 1805. 

 1 England ; ex c. G. Nevill, Esq. 



4. Lacuna crassior. 

 Turbo crassior, Montagu, Test. Brit. 1805. 



