o/ the Fishery Board for Scotland. 187 



The larval witch on escaping from the egg measures, according to 

 Holt,* about 3-99mm., and ten days after hatching, when the yolk was 

 exhausted, a specimen measured 5"57mm. Cunningham found that in forty- 

 eight hours after hatching the length of the larva increased from 3"9 to 

 5'9mm., a rapid increase. From the very considerable length at which 

 transformation is completed, it is evident that the pelagic stage of this 

 species is comparatively prolonged ; one, incompletely transformed, with 

 the left eye on the ridge of tlie head, and measuring 40mm. in length, 

 was taken by myself on 15th January off Aberdeen. 



In the present Report (p. 270) Dr. H. C. Williamson describes the 

 post-larval and early young stages of the witch. 



In the accompanying Table I give the particulars concerning 151 

 post-larval witches caught in tow-nets at various depths in Aberdeen 

 Bay and off it, in the Dornoch Firth, and in the Clyde. 



Sci. Trans. Roy. DuU. Soc. V. (Ser. II.), p. 84 (1893). 



I Table 



