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Updated 3/13/2026

Superfamily Cerithioidea

Dialidae Scaliolidae Litiopidae

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 - ENDEMIC

Cerithium boeticum 

HAWAIIAN HORN

 

 Cerithium boeticum 

HAWAIIAN HORN

 
Cerithium boeticum 

HAWAIIAN HORN

 

 Cerithium boeticum 

HAWAIIAN HORN

 
Cerithium boeticum 

HAWAIIAN HORN

 

 Cerithium boeticum 

HAWAIIAN HORN
   
   

INDO-PACIFIC / HAWAII

Rhinoclavis sinensis

CHINESE HORN

 

 Rhinoclavis articulata

Rhinoclavis articulata, Oahu

ARTICULATED HORN

 

 Rhinoclavis fasciata

PHAROAH'S HORN

 

Rhinoclavis aspera

ROUGH HORN
Cerithium columna

Columnar Horn, Oahu

COLUMNAR HORN

 

 Cerithium echinatum

PRICKLY HORN

 
Cerithium interstriatum

STRIATED HORN

 

 Cerithium nesioticum

ISLAND HORN

 
Cerithium placidum

PLACID HORN

 

 Cerithium rostratum

Cerithium rostratum, Oahu

ROSTRATE HORN

 
Cerithium atromarginatum

BLACK-MARGIN HORN

 

 Cerithium egenum

TURRETED HORN

 

Cerithium zebrum

ZEBRA HORN

 

Cerithium zebrum

ZEBRA HORN

Cerithium zebrum

ZEBRA HORN

 

 Cerithium zonatum

 ZONED HORN

 
Cerithium matukense

MUD HORN

 

 Cerithium rostratum

Cerithium rostratum, Oahu

ROSTRATE HORN
Ittibittium parcum

ITTY-BITTY HORN

 

 Ittibittium parcum

ITTY-BITTY HORN

 
Cerithidium diplax

DIPLAX HORN

 

 Cerithidium perparvulum

TINY HORN

 

 

  
   

WESTERN ATLANTIC

Cerithium muscarum

FLYSPECK CERITH

 

Family Dialidae

INDO-PACIFIC / HAWAII

Diala semistriata

LINED HORN

 

 

Family Scaliolidae

INDO-PACIFIC / HAWAII

Finella pupoides

PUPPET HORN

 

 

Family Litiopidae

INDO-PACIFIC / HAWAII

Styliferina goniochila

GREEN ALGAE SNAIL