S L E N. 



Plate. 



acinacies, Hanley VIL 



ambiguus, Lamarck V. 



aspersus, Bunker VII. 



brevis, (?ra.j/ _. II. 



Cei/lonensis, Dvinkei I. 



coineus, Lamarck IV. 



(and PI. VII., fig. 18 b.) 



Delesserti, Chemn III. 



ensis, Linncetis I. 



exiguus, Bunker VII. 



Ponesii, Bunker VI. 



Gaudichardi, Chemn lU. 



gracilis, Philippi IV. 



grandis, Bunker II. 



Guineenis, Gray .„ IV. 



J oncsii, Bunker , IIL 



Lamarckii, Chemnitz IV. 



Leani, Bunker .„ VII. 



linearis, Chemnitz V. 



Luzonicus, Bunker _ V. 



(and PI. VIL, fig. 20 b.) 



Luzonicus, Dunker HI. 



macha, Okeni , VI. 



Plato. 



Malaccensis, Bunker IV. 



marginatus, Pulteny II. 



ohliqna ? V. 



Vk\Ker\, Bunker VI. 



Philippinarum, Uan]ey V. 



Philippianus, Bunker III. 



regularis. Bunker VI. 



rostriformis. Bunker IV. 



rostrum-anatis, Dunker (see Erratum) III. 



rudis, C. B. Adams V. 



scalpeura, King III. 



sicarius, Gould IV. 



Sloanii, Gray III. 



Tehuelca, Orbigny (see Erratum) 



Timorensis, Bunker VI. 



truncatus, Sowerby I. 



vagina, Linnwus I, 



vagina, Pennant II. 



vaginoides, Lamarck V. 



versicolor, Philippi III. 



viridis, Say VI. 



vitreus, Bunker III. 



Species. 



20 

 4 

 21 

 26 

 21 

 13 

 30 

 18 

 7 

 21 

 12 

 14 

 10 



27 

 1 

 2 

 4 

 23 

 10 

 25 



ERRATUM. 



Species 7, Plate III., for rostrum-anatis, Dunker, read, Gaudichardi, Chemn., Tehuelcha, Orbigny. 

 The fine richly coloured specimen in Mr. Hanley's collection, too late for figuring, has been identified with 

 Mr. Dunker's species, the name of which must become a synonym. 



