- Rhacostoma atlanticum
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Rhacostoma atlanticum 
Scientific classification Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Leptomedusae Family: Aequoreidae Genus: Rhacostoma
L. Agassiz, 1850Species: Rhacostoma atlanticum Binomial name Rhacostoma atlanticum
L. Agassiz, 1850Rhacostoma atlanticum is a species of aequoreid hydrozoans. The species has been reported from the Atlantic coastline of the North America, Colombia, West and Central Africa[1]. Polyp stage is unknown[2].
Morphology
The medusae reach up to 30–40 cm in diameter with the bell height 3–4 times less than the width[1]. Specimens found in the northern waters tend to be transparent, while those found farther south are tinted pink[3]. The broad stomach gives rise to 80–100 non-branching radial canals[1]. Tentacles are slightly more numerous than radial canals and do possess elogated conical bulbs[1].
References
- ^ a b c d Kramp, P. L. (1961). Synopsis of the medusae of the world. Journal of the Marine Biological Association of the United Kingdom 40: 1–469. P. 210 The full text
- ^ Bouillon, J., Gravili, C., Pagès, F., Gili, J. M., Boero, F. (2006). An introduction to Hydrozoa. Mémoires du Muséum national d’Histoire naturelle 194: 1– 591, p. 277.
- ^ Goodwin, G., Bogert, C. M., Gilliard, E., Coates, C. W. The Illustrated Encyclopedia of Animal Life. Odham Books, 1961, vol. 13, p. 1666.
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