Diagnosis
provided by World Register of Marine Species
Prostomium anteriorly rounded, without posterior keel, lacking eyes and occipital tentacle. Peristomium well-developed, partly fused to setiger 1, not elaborated into wings or hood. Palps inserted at anterior dorsal junction of prostomium and peristomium. Setiger 1 lacking notopodial lamellae and setae, neuropodial lamellae bilobed, with capillary setae. Branchiae beginning on setiger 4, continuing for several setigers; elongate, cylindrical, with wrinkled appearance. No interramal or interparapodial pouches. Notopodial setae all capillaries. Neuropodial capillaries of setigers 1 and 2 mostly replaced by unhooded, recurved acicular spines from setiger 3, these spines grading into bidentate hooded hooks by middle of body and continuing to last setiger; ventral sabre setae lacking. Pygidium with 4 unequal lobes.
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- cc-by-4.0
- copyright
- WoRMS Editorial Board
- bibliographic citation
- Maciolek, N.J. (1981). A new genus and species of Spionidae (Annelida: Polychaeta) from the North and South Atlantic. <em>Proceedings of the Biological Society of Washington.</em> 94(1): 228-239. Maciolek, N.J. (1981). Spionidae (Annelida: Polychaeta) from the Galápagos Rift Geothermal Vents. <em>Proceedings of the Biological Society of Washington.</em> 94(3): 826-837. Maciolek, N.J. (1981). Spionidae (Annelida: Polychaeta) from the Galápagos Rift Geothermal Vents. <em>Proceedings of the Biological Society of Washington.</em> 94(3): 826-837. Bishop, G.A. (1988). Two crabs, <i>Xandaros sternbergi</i> (Rathbun 1926) n. gen., and <i>Icriocarcinus xestos</i> n. gen., n. sp., from the Late Cretaceous of San Diego County, California, USA, and Baja California Norte, Mexico. <em>Transactions of the San Diego Society of Natural History.</em> 21(15): 245-257.
- contributor
- João Gil [email]
