KEPOET ON THE EGGS AND LARV^ OF TELEOSTEAN FISHES. 599 



The eggs of Ctenolahrus rupestris, which Holt and Scott first record 

 on April 27th, have only just made their appearance at the time 

 of writing (May 23rd to 25th), and then in large numbers; while 

 Trachinus vipera, which in 1897 did not occur until June 9th, is 

 recorded this year on April 9th. I have only had one egg of this 

 species, but I think there can be little doubt as to its identity. It 

 measured 1-43 mm. in diameter, being larger than the extreme limit 

 given by Holt {Trans. Roy. Dull. Soc, iv. (1891), p. 437), who 

 gives the limits of variation as 1-25-1 -37 mm. It had, however, about 

 fifteen pale green oil globules scattered over the yolk, and the embryo 

 and yolk immediately surrounding it was speckled with pigment which 

 appeared dull yellow by reflected light. 



No eggs have appeared this year up to the present corresponding 

 with those recorded as Trigla gurnardus on March 30th, 1897. 



In other respects my record agrees more or less closely with that 

 of Holt and Scott. 



I append a table showing the different times of appearance in the 

 two years of the eggs above referred to. 



Species. First occurrence 

 recorded in 1897. 



Pleuronectes flesus . . . Mar. 30th 



P. microcephalus . . . Jan. 29th 



P. limanda . ... not recorded 



Solea vulgaris . . . Apr. 22nd 



S. variegata . ... July 27th 



Topknot (with larger oil globule) . Feb. 15th 



Topknot (with smaller oil globule) . Mar. 30th 



Gadtis nierlangus . . . Mar. 30th 



Ctenolahrus rupestris . . . Apr. 27th 



Trachinus vipera . . . June 3rd 



Trigla gurnardus . . . Mar. 30th 



First occurrence 

 recorded in 1902. 



Feb. 21st. 



Feb. 21st. 



Apr. 14th. 



Feb. 27th. 



Apr. 21st. 



Mar. 3rd. 



Mar. 15th. 



Feb. 25th. 



(May 23rd.) 



Apr. 9th. 



not yet recorded. 



Careful coloured drawings have been made of many of the eggs and 

 larvae recorded, and will, I hope, be useful for future reference. 



Before discussing some of the more interesting points which have 

 arisen in connection with the work, I wish to thank Mr. Garstang and 

 Dr. Kyle for help and suggestions on many occasions. 



Gallionymus. 



I obtained eggs of C. lyra first on February 14th, almost as soon 

 as I commenced to examine the contents of the tow-nets. 



The eggs measured varied in diameter between 78 and '93 mm.: — 



Millimetres. 78 "9 -80 -82 -83 -84 -85 -86 "87 -88 -89 '90 '91 "92 -93 



Number of eggs 



132526234 



112 2 2 



