Home > Invertebrates > Shells > Horns

Updated 5/13/2013

Family Cerithiidae

Horns

Horns are herbivorous snails with no relation to the augers.  They are easily recognized by the distinct siphonal canal that may be long and recurved or a semi-circular extension of the aperture.  Axial varices indicate the old location of the aperture.

 

HAWAII

Rhinoclavis sinensis

CHINESE HORN

 

Rhinoclavis articulata

Rhinoclavis articulata, Oahu

ARTICULATED HORN

 

Cerithium columna

Columnar Horn, Oahu

COLUMNAR HORN

 

Cerithium echinatum

PRICKLY HORN

 

Cerithium atromarginatum

BLACK-MARGIN or BLACK-LIPPED HORN

 

Cerithium egenum

TURRETED HORN

 

Cerithium boeticum 

HAWAIIAN HORN

 

 

Cerithium zebrum

ZEBRA HORN

 

Ittibittium parcum

ITTY-BITTY HORN

 

Bittium impendens

IMPENDENS HORN

 

Cerithium interstriatum

Cerithium interstriatum, Oahu

STRIATED HORN

 

Cerithium nesioticum

Cerithium nesioticum, Oahu

ISLAND HORN

 

Cerithium placidum

Cerithium placidum, Oahu

PLACID HORN

 

Cerithium rostratum

Cerithium rostratum, Oahu

ROSTRATE HORN

 

 Rhinoclavis fasciata

Rhinoclavis fasciata, Oahu

PHAROAH'S HORN

 


WESTERN ATLANTIC

Cerithium muscarum

FLYSPECK CERITH

 



Family Plesiotrochidae

HAWAII

Plesiotrochus unicinctus

TOP-SHAPED HORN