Alepocephalus agassizii Agassizii, new species

36. Alepocephalus Agassizii, new species. A single specimen of Alepocephalus was obtained at Station 338, in 922 fathoms, Lat. 38° 18' 40" N., Long. 73° 18' 10" W. This is the fourth species of the genus which has, to date, come up for description: the first, A. rostratus, having...

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Bibliographic Details
Main Authors: Goode, G. B., Bean, T. H.
Format: Other/Unknown Material
Language:unknown
Published: Zenodo 1883
Subjects:
Online Access:https://doi.org/10.5281/zenodo.6294132
http://zoobank.org/FC7E3999-55C5-4279-A5A3-AE7CF2936565
http://treatment.plazi.org/id/0828A3C0B249D755343661341F03F6A4
Description
Summary:36. Alepocephalus Agassizii, new species. A single specimen of Alepocephalus was obtained at Station 338, in 922 fathoms, Lat. 38° 18' 40" N., Long. 73° 18' 10" W. This is the fourth species of the genus which has, to date, come up for description: the first, A. rostratus, having been described by Risso from the Mediterranean in 1820; the second, A. niger, from north of Australia, at a depth of 1,400 fathoms, obtained by H. M. S. " Challenger, ’’ and described by Gunther in 1878; the third, A. Bairdii, from the Grand Banks of Newfoundland, at a depth of 200 fathoms, described by us in 1879. The former American species having been named in honor of the Director of the U. S. National Museum, we propose to dedicate the one now under consideration to the Curator of the Museum of Comparative Zoology, under the name Alepocephalus Agassizii. Diagnosis. - Body slightly less elongate than in A. Bairdii, its height being contained very slightly more than five times in its length to origin of middle caudal rays, somewhat compressed, its width being about half its height. The least height of the tail is contained twelve times in the length of the l*odv. O O % • Scales apparently ovate-lanceolate, parchment-like, smaller than in A. Bairdii: the specimen is almost denuded of scales, and their arrangement in the drawing has been in part made out from their impressions upon the skin. There are ninety scales in the lateral line, ten between lateral line and origin of dorsal, eleven between same and origin of anal. The base of the dorsal is squamose, the anal slightly so, but probably less than in A. Bairdii. Head somewhat compressed, snout conically elongate, the lower jaw slightly produced. Its length is contained three times in the length of the body (in A. Bairdii, 4-J-), slightly exceeding twice the length of the lower jaw, and four times the least height of the tail (in A. Bairdii, less than three). Width of head.slightly less than length of operculum, and times in length of body (12 in A. Bairdii). Length of snout half ...