148 



ANNALS OF SCOTTISH NATURAL HISTORY 



Mr. Holt. But there the under side was almost colourless. 

 A Turbot seemingly similar to the present one was described 

 and figured by Duhamel du Monceau in I/77, 1 but I have 

 been unable to refer to the original account. According to 

 Prof. Bateson's summary, however, both sides were coloured, 

 a slight notch was present at the anterior end of the dorsal 

 fin, and the upper eye was " figured as in its normal place." 



HEAD AND ANTERIOR PORTION OF DORSAL FIN OF AMBICOLORED TURBOT. 



But in sketching such a specimen as appears in our text- 

 figure, it would be a simple matter for the artist unintention- 

 ally to lessen the interorbital space, thus creating a close 

 likeness to normality so far as the eyes are concerned. And 

 some such explanation may account for the apparently 

 normal position in Duhamel's figure. 



In typical " cyclopean " malformation, excellent figures 

 of which are given by Traquair, 3 Cunningham, 4 and 



1 Duhamel du Monceau, " Traite general des Pesches," 1777, iii. sect. ix. 

 p. 262, pi. iii. figs. 3 and 4. 



' 2 Bateson, W. , " Materials for the Study of Variation," London, 1 894, p. 470. 



3 Traquair, R. H., "On the Asymmetry of the Pleuronectidce," Trans. Linn. 

 Soc. (I.), xxv. pi. 31, figs. 8 and 9. 



4 Cunningham and MacMunn, I.e., pi. 54, figs. I and 2. 



