Family Triphoridae

The family Triphoridae has many species of mostly small, narrow shells. Most species are characterized by being normally sinistral in construction; that is, the shell coils left-handed, rather than right-handed as is typical of nearly all other marine snails. Most live hidden under rocks feeding on sponges. We recognize more than 100 distinct species here in the Marshalls, but there are several others not figured here due to lack of photographs. Because of their small size, the lack of available identification references, and the difficulty of identifying species, many of these remain unidentified and some are probably as yet unnamed. Also, it is likely some of these are identified incorrectly. We continue to work on IDs, but would welcome corrections at uwkwaj@yahoo.com. (Click on a thumbnail for pages with larger images.)


Aclophora robusta

Aclophora xystica

Aclophoropsis mcmichaeli


Bouchetriphora pallida


Cautotriphora hervieri

Cautotriphora jazwinskii

Cautotriphora pavimenta


Cautotriphora sp. 1

Coriophora granosa

Coriophora ustulata

Coriophora sp. 1

Coriophora sp. 2

Euthymella concors

Euthymella elegans

Euthymella kosugei

Euthymella? cf lutea

Euthymella regalis

Euthymella sp. 1

Euthymella sp. 2


Euthymella sp. 3

Euthymella sp. 5

Euthymella sp. 7

Inella asperrima

Inella cf lanceolata

Inella pagoda

Inella rossiteri

Inella cf rossiteri

Inella ryosukei

Inella sp. 3

Inella sp. 6

Inella? sp. 7

Inella sp. 8

Inella sp. 10

Inella? sp. 12

Inella? sp. 13

Iniforis aemulans

Iniforis cf formosula


Iniforis hinuhimu

Iniforis ikukoae

Iniforis cf ordinata

Iniforis cf reevei

Iniforis cf violacea

Iniforis sp. 2

Iniforis sp. 3

Iniforis? sp. 5

Iniforis? sp. 6

Iniforis sp. 7

Iniforis? sp. 8

Latitriphora maxillaris

Mastonia funebris

Mastonia cf funebris

Mastonia lamberti

Mastonia papillata

Mastonia rubra

Mastonia cf rubra

Mastonia squalida

Mastonia undata

Mastonia sp. 1

Mastonia sp. 2

Mastonia sp. 3

Mastonia sp. 5

Mastonia? sp. 6

Mastonia sp. 8

Mastonia sp. 10

Mastoniaeforis jousseaumei

Mastoniaeforis lifuana

Mastoniaeforis sp. 4

Metaxia sp. 1

Metaxia sp. 2

Metaxia sp. 3

Metaxia sp. 5

Metaxia sp. 6

Monophorus lucidulus

Monophorus quadrimaculatus


Monophorus? cf puniceus

Nanaphora triticea

Opimaphora coralina

Triphora collaris

Triphora taeniolata

Triphoridae sp. 4

Triphoridae sp. 6

Triphoridae sp. 7

Triphoridae sp. 8

Triphoridae sp. 10

Triphoridae sp. 11

Triphoridae sp. 12

Triphoridae sp. 13

Triphoridae sp. 14

Triphoridae sp. 15

Triphoridae sp. 16

Triphoridae sp. 18

Triphoridae sp. 20

Triphoridae sp. 21

Triphoridae sp. 23

Triphoridae sp. 24

Triphoridae sp. 25

Triphoridae sp. 26

Triphoridae sp. 27

Triphoridae sp. 29

Triphoridae sp. 30

Triphoridae sp. 31

Triphoridae sp. 33

Triphoridae sp. 37

Triphoridae sp. 39

Triphoridae sp. 40

Triphoridae sp. 41

Triphoridae sp. 42

Triphoridae sp. 43

Triphoridae sp. 45

Triphoridae sp. 47

Viriola abbotti

Viriola bayani

Viriola cancellata

Viriola intergranosa

Viriola sp. 2