Shells of South
East Queensland

Tweed Heads to Noosa
Cypraeidae

Naria helvola

(Linnaeus, 1758)
Shell: small to moderately small, solid, Ovate to sub-pyriform, ranging from 10-26 mm. Spire concealed. Teeth: 12 to 16 columellar teeth; 12 to 17 labral teeth. Sculpture: smooth, porcelaneous; margins calloused and pitted along upper edge; labral teeth strong extending across to the margin. Aperture elongate, narrow, slightly wider at anterior. Exterior colour orange tan; dorsum dusted with white spots and larger, diffuse brown spots; base orange to tan, darker centrally; margins orange, becoming darker towards the dorsum; canals mauve. Mantle line weak.


Specimens

Gneerings Shoal,  Australia
Size: 21.06mm    Collected: Unknown
Collected from under rocks on rocky reef at 10-15m by diver.

forma: citrinicolor  (Iredale, 19335)
This form from WA. Collumelar teeth shorter in the mid section; paleish basal callous; dorsum greenish; spotting often diffuse.
Exmouth,  Australia
Size: 24.91mm    Collected: 1990
No data

forma: citrinicolor  
This form from WA. Collumelar teeth shorter in the mid section; paleish basal callous; dorsum greenish; spotting often diffuse.
South Passage, Shark Bay,  Australia
Size: 23.61mm    Collected: Unknown
Collected from under coral slabs on hard reef at 3-5m.

forma: citrinicolor  
This form from WA. Collumelar teeth shorter in the mid section; paleish basal callous; dorsum greenish; spotting often diffuse.
Albany,  Australia
Size: 25.51mm    Collected: Unknown
Collected form under rocks at 10m.

Broome,  Australia
Size: 22.02mm    Collected: Unknown
No data

Bedout Island,  Australia
Size: 24.21mm    Collected: Unknown
No data

Grand Central Station,  Solomon Islands
Size: mm    Collected: 1998
found on coral reef in 2m of water under a rock

Man Friday Resort,  Fiji
Size: mm    Collected: 1997
found dead on coral reef in 2m of water

Subspecies: Naria helvola bellatrix  (Lorenz, 2009)
This subspecies from the Marquesas Islands. Rhomboid, collumellar teeth longer often extending across extremities; extremities stained white.
Taioha'e Bay,  Marquesas
Size: 20.52mm    Collected: Unknown
Collected from under rocks on rubble slopes at 15-20m by diver.

Mactan Island,  Philippines
Size: 10mm    Collected: 2017
collected by diver 20-30 m depth

Home Island,  Indonesia
Size: 24.18mm    Collected: Unknown
Collected from rubble at extreme low tide.
Small Indian Ocean form
Mios Andau Kecil,  Indonesia
Size: 24.88mm    Collected: Unknown
Collected from coral , sand patches and rubble at 30m by diver.

Transkei,  South Africa
Size: 26.32mm    Collected: Unknown
Collected from under slabs on shallow rocky reef.

forma: argella  
This form from East Africa; calloused; chestnut base with dark purple tips.
Tanzania [unspecified],  Tanzania
Size: mm    Collected: 1985
swapped

forma: argella  
This form from East Africa; calloused; chestnut base with dark purple tips.
Toliara,  Madagascar
Size: 18.49mm    Collected: Unknown
Collected at low tide.

Subspecies: Naria helvola hawaiiensis  (Melvill, 1888)
This subspecies from Hawaii. Calloused; white with dark brown spots on pinkish background; base brown to pink; tips lilac; collumelar teeth short.
Oahu,  United States of America
Size: 21.83mm    Collected: 1996
Collected from under coral and rocks at 3-5m by diver.