Abstract
ABSENCE from Liverpool has prevented me replying to Mr. J. T. Cunningham's criticisms of the work on the anatomy of the Plaice recently published by Mr. Johnstone and myself. The passage which Mr. Cunningham chiefly objects to is as follows:—“If [the dorsal fin] occupies the mid-dorsal line of the head, then it is obvious that the left eye must have actually passed through the substance of the head to reach the ocular side. This supposition, absurd as it may seem to us now, was in fact believed by such an observer as Steenstrup.” In “correcting” this passage Mr. Cunningham says:—“The truth of the matter is that Steenstrup did not believe any supposition, absurd or otherwise, on the subject, but stated from actual observation that in certain larval Pleuronectidæ the eye of one side passed through the tissues of the head and emerged on the other side. The form in question was long known as Plagusia, and is now known to be the larva of Rhomboidichthys. The truth of Steenstrup's observations was fully confirmed by Alexander Agassiz at Newport, R.I.”
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COLE, F. The Morphology of the Pleuronectidæ. Nature 65, 585 (1902). https://doi.org/10.1038/065585c0
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DOI: https://doi.org/10.1038/065585c0
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