SEA-FISHERIES LABORATORY. 425 



Grey Gurnard egg 1-163 — 1-55 mm., oil glob. 0-25 — 0-33 mm. 

 Red Gurnard egg 1-45— 1-61 mm., oil glob. 0-28—0-33 mm. 

 Yellow Gurnard egg 1-1—1-7 mm., oil glob. 0-22—0-29 mm. 



Gurnard eggs were observed in the plankton 

 collected between April 1st and 27th in 1907. Only one 

 record was obtained in 1908, and that was from a tow- 

 netting taken on April 23rd. The eggs were noticed as 

 early as March 29th in 1909, and from April 7th to 24th. 

 Gurnard eggs were more plentiful in the plankton 

 collected in 1910 than in any of the other years 

 since the intensive investigations commenced. They 

 were generally distributed from May 23rd to the 31st. 

 A few were found on June 3rd and 7th, and again on 

 July 14th. Surface collections taken on August 8th, 13th, 

 22nd and 23rd also contained pelagic eggs which were 

 identified as Trigla sp. In 1911 the eggs occurred on 

 April 27th, May 8th, June 4th and August 14th. The 

 eggs found on August 14th measured 1"45 mm. in 

 diameter, and the oil globule 0'32 mm. These were 

 probably the eggs of the Bed Gurnard. Only one record 

 was obtained in 1912, and that was from plankton 

 collected on June 20th. Some doubt was felt from time 

 to time that possibly the summer eggs identified as 

 gurnard might be those of the mackerel, but the 

 colour of the oil globules was quite distinct. The oil 

 globule in gurnard eggs is usually red or somewhat 

 smoky looking, and the oil globule in the mackerel egg 

 is greenish-yellow. The mackerel egg measures 1'22 mm. 

 in diameter and the oil globule 0'32mm., which quite 

 corresponds with the sizes given above for gurnard eggs. 



Callionymus lyra, Linn. — Dragonet. 



The very easily recognised egg of the dragonet 

 appears to be generally distributed in the south-west 





