| Maxwellia gemma | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Muricidae |
| Genus: | Maxwellia |
| Species: | M. gemma |
| Binomial name | |
| Maxwellia gemma (Sowerby, 1879) | |
| Synonyms [1] | |
| |
Maxwellia gemma, commonly known as gem murex, is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails. [1]
The fusiform shell is of moderate size and its length varies between 16 mm and 40 mm. The color of the shell is somewhat white with spiral bands with a reddish-brown to bluish-black color on the leading edge of each varix. The shell has a rather short, subacute, conical spire. There are five convex whorls. The body whorl is broad and spindle-shaped. Each spire whorl contains six rounded varices that are broader at the body whorl, but thinner and curved back at the stubby, top whorls and around the siphonal canal. The sutures between the whorls are deep and crossed by the oblique varices. The porcelaneous white aperture has an oval shape and has a finely dentate outer lip. The siphonal canal is rather short, almost completely closed and curved to the left at the base. There is no apparent anal canal. The inner surface of the aperture has a rippled form, reflecting the form of the ribs at the outer surface. The columella is smooth. [2] [3]
This species is distributed in the Pacific Ocean along California to Central Baja California, Mexico in rocky areas from the littoral zone to depths of 55 m. It can often be found in great numbers on breakwaters and close to the entrances to bays.
Maxwellia santarosana, common name the "Santa Rosa murex" is a species of small predatory sea snail, a marine gastropod mollusk in the family Muricidae, the rock snails.
Murex trapa, common name the rare-spined murex, is a species of sea snail, a marine gastropod mollusc of the family Muricidae, the rock snails.
Bolinus cornutus, or horned murex, is a predatory species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex or rock snails. This species is common along the west coast of Africa, where it prefers moderately shallow waters. The shell of the snail is distinctively large, spiny, and club-shaped, usually pale brown or tan in colour, with an elongated and straight siphonal canal.
Boreotrophon alaskanus is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Chicomurex rosadoi is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Chicoreus dunni is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Dermomurex gofasi is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Favartia lindae is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Favartia hilli is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Favartia (Murexiella) taylorae taylorae is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Pygmaepterys richardbinghami is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Maxwellia angermeyerae is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Murexsul harasewychi is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Murexsul sunderlandi is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Pterynotus bipinnatus, common name the two-winged murex, is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Purpurellus pinniger is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Vokesimurex dentifer is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Vokesimurex sobrinus is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Maxwellia is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Scabrotrophon stuarti is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
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