Hydrelaps darwiniensis BOULENGER, 1896
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|Higher Taxa||Elapidae (Hydrophiinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Port Darwin seasnake|
|Synonym||Hydrelaps darwiniensis BOULENGER 1896: 270|
Hydrelaps darwiniensis — SMITH 1974: 107
Hydrelaps darwiniensis — COGGER 1983: 248
Hydrelaps darwiniensis — WELCH 1994: 67
Hydrelaps darwiniensis — COGGER 2000: 712
Hydrelaps darwiniensis — WILSON & SWAN 2010
Hydrelaps darwiniensis — WALLACH et al. 2014: 338
|Distribution||Coral Sea (S New Guinea, Australia)|
Australia (Northern Territory, Queensland, Western Australia)
Type locality: Port Darwin, N. T.
|Types||Lectotype: BMNH 19184.108.40.206, designated by Kharin (2008). Syntypes: BMNH 19220.127.116.11-92|
|Diagnosis||Diagnosis: Distinguished from all other sea snakes by the absence of preocular. (Smith 1974)|
Description: A small snake (up to 525 mm) of fairly uniform thickness throughout body. Head moderately large; head shields entire, symmetrical, no canthus rostralis. Tail slightly downcurved.
Rostral as wide as, or slightly wider than high, and as wide as, or slightly wider than frontal, which is as long as, to twice as long as, wide (mostly as long as, or slightly longer than wide). Supraocular as wide as, to half as wide as, frontal. One postocular, Temporals: 1 anterior, 1 or 2 posterior. Upper labials 6 (5 once on one side), third and fourth entering orbit; lower labials mostly 7 (sometimes 6), the fourth the largest. Two pairs of chin shields prominent, in contact; posterior pair the longer.
Midbody scale rows 25 or 26 (mostly 25), the scales smooth; rows on lower flanks juxtaposed; remainder of dorsals imbricate. Ventrals 160-179; twice as wide as adjacent dorsals. Subcaudals 20-36 (males 29-36, females 20-29). (Smith 1974)
Coloration: Ground colour light grey or yellowish with 35-44 (occasionally confluent) bands on body, widest on back where they may enclose a pale spot and (sometimes) be widened on the belly; the adjoining ventrals on either side of each band blackened so that the majority of ventrals appear black. Head bluish grey. (Smith 1974)
Habitat: mostly marine, but semi-aquatic.
Type species: Hydrelaps darwiniensis BOULENGER 1896 is the type species of the genus Hydrelaps BOULENGER 1896.
|Etymology||Named after the city Darwin, Australia.|
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