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Record: oai:ARNO:318189

AuthorF.P. Koumans
TitleNotes on the Gobioid Fishes : 1 - 5
JournalZoologische Mededelingen
Volume15
Year1932
Issue1
Pages1-16
ISSN0024-0672
AbstractIntroduction.
The measurements given in this note and following notes are expressed in hundredths of length and are made by means of dividers. They are taken about in the same way as used by the American authors.
The length is measured from the tip of the snout to the end of the last vertebra.
The depth is taken at the deepest part of the body, the depth of caudal peduncle halfway the peduncle. Length of head from tip of snout to the upper end of the posterior edge of operculum. Length of snout from its tip to the anterior margin of the orbit. Width of interorbital space is measured with the dividers pinched tightly between the bony orbits. Diameter of orbit is measured longitudinally. Distance from snout to D 1 from the tip of the snout to the insertion of the first dorsal spine, distance from snout to D 2 and A from the tip of the snout to the insertion of the first ray of D 2 and A. Length of caudal peduncle from the insertion of the last anal ray to the end of the last vertebra. Length of the caudal fin from the end of the last vertebra to the end of the longest caudal ray. Length of P and V from the insertion of the fin to the end of the longest ray. Length of D 1 from the insertion of the first spine to the insertion of the last spine, not to the end of the membrane! Length of D 2 and A from the insertion of the first ray to the insertion of the last ray of each fin.
The last ray of D 2 and A, which is mostly split to the base, is counted as one ray, in the same way the first ray of D 2 and A, which is mostly unbranched, is counted as one ray.
Classification42.81
Document typearticle
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