Plate 1 1 



Fig. 1. Buccinum [Neptunea] siimpsoni Gould. Arctic Ocean. Holotype MCZ 169454. 



Height 100, width 45 mm. (1.4 x). 

 Fig. 2. Buccinum [Neptunea] rodgersi Gould. Arctic Ocean, north of Behring's [Bering] 



Straits. Holotype MCZ 169338. Height 55, width 25 mm. (1.6 x). 

 Fig. 3. Buccinum [Columbella] rosaceum Gould. Off Cohasset [Massachusetts]. Lecto- 



type MCZ 169340. Height 7, width 3.2 mm. (7.5 x). 

 Fig. 4. Cerithium lacertinum Gould. Sydney Harbor [New South Wales, Australia]. 



Holotype USNM 16571, original no. 273. Height 13, width 4 mm. (2 x). 

 Fig. 5. Cantharidus lineolaris Gould. Sydney, New South Wales [Australia]. Holotype 



USNM 24161, original no. 300. Height 7, width 4 mm. (5.5 x). 

 Fig. 6. Cerithidea {hacrata, var.) fuscata Gould. San Diego [California]. Lectotvpe 



MCZ 169158. Height 46, width 10 mm. (1.9 x). 



